1

                                                                   EXHIBIT 2.1

                          AGREEMENT AND PLAN OF MERGER


                          DATED AS OF SEPTEMBER 1, 1997


                                      AMONG


                             DOUBLETREE CORPORATION,


                            PROMUS HOTEL CORPORATION


                                       AND


                              PARENT HOLDING CORP.




   2


                                TABLE OF CONTENTS




                                                                                          Page
                                                                                        
ARTICLE I.        THE MERGERS................................................................2

   Section 1.1.   Certificate of Incorporation and Bylaws of Parent..........................2
   Section 1.2.   The Doubletree Merger......................................................2
   Section 1.3.   The Promus Merger..........................................................2
   Section 1.4.   Effective Time of the Mergers..............................................2
   Section 1.5.   Closing....................................................................3
   Section 1.6.   Effect of the Mergers......................................................3
   Section 1.7.   Certificate of Incorporation and Bylaws of the Surviving Corporations......3
   Section 1.8.   Directors and Officers of the Surviving Corporations.......................3

ARTICLE II.       CONVERSION OF SECURITIES...................................................4

   Section 2.1.   Conversion of Doubletree Capital Stock.....................................4
   Section 2.2.   Conversion of Promus Capital Stock.........................................4
   Section 2.3.   Cancellation of Parent Stock...............................................5
   Section 2.4.   Exchange of Certificates...................................................5

ARTICLE III.      REPRESENTATIONS AND WARRANTIES OF DOUBLETREE...............................8

   Section 3.1.   Organization of Doubletree.................................................8
   Section 3.2.   Doubletree Capital Structure...............................................9
   Section 3.3.   Authority; No Conflict; Required Filings and Consents.....................10
   Section 3.4.   SEC Filings; Financial Statements.........................................11
   Section 3.5.   No Undisclosed Liabilities................................................12
   Section 3.6.   Absence of Certain Changes or Events......................................12
   Section 3.7.   Taxes.....................................................................12
   Section 3.8.   Properties................................................................13 
   Section 3.9.   Intellectual Property.....................................................14
   Section 3.10.  Agreements, Contracts and Commitments.....................................14
   Section 3.11.  Litigation................................................................14
   Section 3.12.  Environmental Matters.....................................................14
   Section 3.13.  Employee Benefit Plans....................................................15
   Section 3.14.  Compliance With Laws......................................................16
   Section 3.15.  Accounting and Tax Matters................................................16
   Section 3.16.  Registration Statement; Joint Proxy Statement/Prospectus..................17
   Section 3.17.  Labor Matters.............................................................17
   Section 3.18.  Insurance.................................................................18
   Section 3.19.  Doubletree Long-Range Plans...............................................18
   Section 3.20.  Opinion of Financial Advisor..............................................18
   Section 3.21.  No Existing Discussions...................................................18
   Section 3.22.  Section 203 of the DGCL Not Applicable....................................18


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                                                                                          Page
                                                                                        

   Section 3.23.  Doubletree Rights Plan....................................................18

ARTICLE IV.       REPRESENTATIONS AND WARRANTIES OF PROMUS..................................19

   Section 4.1.   Organization of Promus....................................................19
   Section 4.2.   Promus Capital Structure..................................................19
   Section 4.3.   Authority; No Conflict; Required Filings and Consents.....................20
   Section 4.4.   SEC Filings; Financial Statements.........................................21
   Section 4.5.   No Undisclosed Liabilities................................................22
   Section 4.6.   Absence of Certain Changes or Events......................................22
   Section 4.7.   Taxes.....................................................................22
   Section 4.8.   Properties................................................................23
   Section 4.9.   Intellectual Property.....................................................23
   Section 4.10.  Agreements, Contracts and Commitments.....................................24
   Section 4.11.  Litigation................................................................24
   Section 4.12.  Environmental Matters.....................................................24
   Section 4.13.  Employee Benefit Plans....................................................25
   Section 4.14.  Compliance With Laws......................................................26
   Section 4.15.  Accounting and Tax Matters................................................26
   Section 4.16.  Registration Statement; Joint Proxy Statement/Prospectus..................26
   Section 4.17.  Labor Matters.............................................................27
   Section 4.18.  Insurance.................................................................27
   Section 4.19.  Promus Long-Range Plans...................................................27
   Section 4.20.  Opinion of Financial Advisor..............................................27
   Section 4.21.  No Existing Discussions...................................................27
   Section 4.22.  Section 203 of the DGCL Not Applicable....................................27
   Section 4.23.  Promus Rights Plan........................................................27

ARTICLE V.        COVENANTS.................................................................28

   Section 5.1.   Conduct of Business.......................................................28
   Section 5.2.   Cooperation; Notice; Cure.................................................30
   Section 5.3.   No Solicitation...........................................................30
   Section 5.4.   Joint Proxy Statement/Prospectus; Registration Statement..................31
   Section 5.5.   NASDAQ Quotation and NYSE Listing.........................................32
   Section 5.6.   Access to Information.....................................................32
   Section 5.7.   Stockholders' Meetings....................................................32
   Section 5.8.   Legal Conditions to Merger................................................32
   Section 5.9.   Public Disclosure.........................................................33
   Section 5.10.  Nonrecognition Exchange...................................................33
   Section 5.11.  Pooling Accounting........................................................34
   Section 5.12.  Affiliate Agreements......................................................34
   Section 5.13.  NYSE Listing..............................................................34
   Section 5.14.  Stock Plans...............................................................34
   Section 5.15.  Brokers or Finders........................................................35
   Section 5.16.  Indemnification...........................................................36



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                                                                                          Page
                                                                                        
   Section 5.17.  Letter of Promus's Accountants............................................36
   Section 5.18.  Letter of Doubletree's Accountants........................................37
   Section 5.19.  Stock Option Agreements...................................................37
   Section 5.20.  Post-Merger Corporate Governance; Employment Arrangements.................37
   Section 5.21.  Name of Parent............................................................39
   Section 5.22.  Parent Stockholder Rights Plan; Amendment of Promus Rights Plan...........39
   Section 5.23.  GEPT Warrant; Doubletree Registration Rights Agreement....................39
   Section 5.24.  Conveyance Taxes..........................................................39
   Section 5.25.  Transfer Taxes............................................................40
   Section 5.26.  Stockholder Litigation....................................................40
   Section 5.27.  Employee Benefits; Severance..............................................40

ARTICLE VI.       CONDITIONS TO MERGER......................................................41

   Section 6.1.   Conditions to Each Party's Obligation to Effect the Mergers...............41
   Section 6.2.   Additional Conditions to Obligations of Doubletree........................42
   Section 6.3.   Additional Conditions to Obligations of Promus............................43

ARTICLE VII.       TERMINATION AND AMENDMENT................................................43

   Section 7.1.   Termination...............................................................43
   Section 7.2.   Effect of Termination.....................................................45
   Section 7.3.   Fees and Expenses.........................................................45
   Section 7.4.   Amendment.................................................................47
   Section 7.5.   Extension; Waiver.........................................................47

ARTICLE VIII.     MISCELLANEOUS.............................................................48

   Section 8.1.   Nonsurvival of Representations, Warranties and Agreements.................48
   Section 8.2.   Notices...................................................................48
   Section 8.3.   Interpretation............................................................49
   Section 8.4.   Counterparts..............................................................49
   Section 8.5.   Entire Agreement; No Third Party Beneficiaries............................49
   Section 8.6.   Governing Law.............................................................49
   Section 8.7.   Assignment................................................................49


EXHIBITS

        Exhibit A       Stock Option Agreement (Doubletree)
        Exhibit B       Stock Option Agreement (Promus)
        Exhibit C       Stockholder Support Agreement
        Exhibit D       Certificate of Incorporation of Parent
        Exhibit E       Bylaws of Parent
        Exhibit F       Form of Doubletree Affiliate Agreement
        Exhibit G       Form of Promus Affiliate Agreement


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                             TABLES OF DEFINED TERMS



                                                                              CROSS REFERENCE
TERMS                                                                          IN AGREEMENT
- -----                                                                          ------------
                                                                             
Acquisition Proposal                                                           Section 5.3(a)
Affiliate                                                                      Section 5.12
Affiliate Agreement                                                            Section 5.12
Agreement                                                                      Preamble
Alternative Transaction                                                        Section 7.3(e)
Bankruptcy and Equity Exception                                                Section 3.3(a)
Certificate of Merger                                                          Section 1.4
Certificates                                                                   Section 2.4(b)
Closing                                                                        Section 1.5
Closing Date                                                                   Section 1.5
Code                                                                           Preamble
Confidentiality Agreements                                                     Section 5.3(a)
DGCL                                                                           Section 1.2
Doubletree                                                                     Preamble
Doubletree Balance Sheet                                                       Section 3.4(b)
Doubletree Common Stock                                                        Section 2.1
Doubletree Director                                                            Section 5.20(a)
Doubletree Disclosure Schedule                                                 Article III
Doubletree Employee Plans                                                      Section 3.13(a)
Doubletree Employees                                                           Section 5.27(b)
Doubletree Exchange Ratio                                                      Section 2.1(c)
Doubletree Material Adverse Effect                                             Section 3.1
Doubletree Material Contracts                                                  Section 3.10(a)
Doubletree Merger                                                              Section 1.2
Doubletree Preferred Stock                                                     Section 3.2(a)
Doubletree Rights Plan                                                         Section 3.2(b)
Doubletree SEC Reports                                                         Section 3.4(a)
Doubletree Stock Option                                                        Section 5.14(a)
Doubletree Stock Option Agreement                                              Preamble
Doubletree Stock Plans                                                         Section 3.2(a)
Doubletree Stockholders' Meeting                                               Section 3.16
Doubletree Sub                                                                 Section 1.2
Doubletree Surviving Corporation                                               Section 1.6
Effective Time                                                                 Section 1.4
Environmental Law                                                              Section 3.12(b)
ERISA                                                                          Section 3.13(a)
ERISA Affiliate                                                                Section 3.13(a)
Exchange Act                                                                   Section 3.3(c)
Exchange Agent                                                                 Section 2.4(a)
Exchange Fund                                                                  Section 2.4(a)
GEPT Warrant                                                                   Section 3.2(b)
Governmental Entity                                                            Section 3.3(c)



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                                                                              CROSS REFERENCE
TERMS                                                                          IN AGREEMENT
- -----                                                                          ------------
                                                                             

Hazardous Substance                                                            Section 3.12(c)
HSR Act                                                                        Section 3.3(c)
Indemnified Parties                                                            Section 5.16(a)
IRS                                                                            Section 3.7(b)
Joint Proxy Statement/Prospectus                                               Section 3.16
Material Lease(s)                                                              Section 3.8(a)
Mergers                                                                        Section 1.3
NYSE                                                                           Section 2.4(e)
Order                                                                          Section 5.8(b)
Outside Date                                                                   Section 7.1(b)
Parent                                                                         Preamble
Parent Common Stock                                                            Section 2.1(c)
Parent Rights Plan                                                             Section 5.22
Promus                                                                         Preamble
Promus Balance Sheet                                                           Section 4.4(b)
Promus Common Stock                                                            Section 2.2
Promus Director                                                                Section 5.20(a)
Promus Disclosure Schedule                                                     Article IV
Promus Employee Plans                                                          Section 4.13(a)
Promus Employees                                                               Section 5.27(b)
Promus Exchange Ratio                                                          Section 2.2(c)
Promus Material Adverse Effect                                                 Section 4.1
Promus Material Contracts                                                      Section 4.10(a)
Promus Merger                                                                  Section 1.3
Promus Preferred Stock                                                         Section 4.2(a)
Promus Rights Plan                                                             Section 4.2(b)
Promus SEC Reports                                                             Section 4.4(a)
Promus Special Stock                                                           Section 4.2(a)
Promus Stock Option                                                            Section 5.14(a)
Promus Stock Option Agreement                                                  Preamble
Promus Stock Plans                                                             Section 4.2(a)
Promus Stockholders' Meeting                                                   Section 3.16
Promus Sub                                                                     Section 1.3
Promus Surviving Corporation                                                   Section 1.6
Registration Statement                                                         Section 3.16
Rule 145                                                                       Section 5.12
SEC                                                                            Section 3.3(c)
Securities Act                                                                 Section 2.4(j)
Stock Option Agreements                                                        Preamble
Stockholder Support Agreement                                                  Preamble
Subsidiary                                                                     Section 3.1
Superior Proposal                                                              Section 5.3(a)
Surviving Corporation                                                          Section 1.6
Tax                                                                            Section 3.7(a)



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                                                                              CROSS REFERENCE
TERMS                                                                          IN AGREEMENT
- -----                                                                          ------------
                                                                             

Taxes                                                                          Section 3.7(a)
Third Party                                                                    Section 5.3(a)
Transfer Taxes                                                                 Section 5.25



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                          AGREEMENT AND PLAN OF MERGER


        AGREEMENT AND PLAN OF MERGER (the "Agreement"), dated as of September 1,
1997, by and among DOUBLETREE CORPORATION, a Delaware corporation
("Doubletree"), PROMUS HOTEL CORPORATION, a Delaware corporation ("Promus") and
PARENT HOLDING CORP., a newly-formed Delaware corporation with nominal
capitalization, one-half of the issued and outstanding capital stock of which is
nominally owned by each of Doubletree and Promus ("Parent").

        WHEREAS, the Boards of Directors of Doubletree and Promus deem it
advisable and in the best interests of each corporation and its respective
stockholders that Doubletree and Promus combine in a "merger of equals" in order
to advance the interests of Doubletree and Promus and their respective
stockholders;

        WHEREAS, the combination of Doubletree and Promus shall be effected by
the terms of this Agreement through (i) a merger of a wholly-owned subsidiary of
Parent with and into Doubletree and (ii) a merger of another wholly-owned
subsidiary of Parent with and into Promus, such that Doubletree and Promus
become wholly-owned subsidiaries of Parent and the stockholders of Doubletree
and Promus become stockholders of Parent;

        WHEREAS, concurrently with the execution and delivery of this Agreement
and as a condition and inducement to each of Doubletree's and Promus's
willingness to enter into this Agreement, Doubletree and Promus have entered
into (i) a Stock Option Agreement dated as of the date of this Agreement and
attached hereto as Exhibit A (the "Doubletree Stock Option Agreement"), pursuant
to which Promus granted Doubletree an option to purchase shares of common stock
of Promus under certain circumstances, and (ii) a Stock Option Agreement dated
as of the date of this Agreement and attached hereto as Exhibit B (the "Promus
Stock Option Agreement" and, together with the Doubletree Stock Option
Agreement, the "Stock Option Agreements"), pursuant to which Doubletree granted
Promus an option to purchase shares of common stock of Doubletree under certain
circumstances;

        WHEREAS, concurrently with the execution and delivery of this Agreement
and as a condition and inducement to Promus's willingness to enter into this
Agreement, certain stockholders of Doubletree have entered into a Stockholder
Support Agreement with Promus dated as of the date of this Agreement and
attached hereto as Exhibit C (the "Stockholder Support Agreement"), pursuant to
which such stockholders have agreed, among other things, to vote all voting
securities of Doubletree beneficially owned by them in favor of approval and
adoption of the Agreement and the Doubletree Merger (as defined in Section 1.2);

        WHEREAS, for Federal income tax purposes, it is intended that (i) the
Doubletree Merger shall qualify as a reorganization described in Section 368(a)
of the Internal Revenue Code of 1986, as amended (the "Code") and/or, taken
together with the Promus Merger (as defined in Section 1.3), as a transfer of
property to Parent by holders of Doubletree Common Stock (as defined in Section
2.1) described in Section 351 of the Code and (ii) the Promus Merger shall
qualify as a reorganization described in Section 368(a) of the Code and/or,
taken together with 


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the Doubletree Merger, as a transfer of property to Parent by holders of Promus
Common Stock described in Section 351 of the Code;

        WHEREAS, for accounting purposes, it is intended that the transactions
contemplated by this Agreement shall be accounted for as a pooling of interests;
and

        WHEREAS, the Boards of Directors of Doubletree and Promus have approved
this Agreement, the Stock Option Agreements and the Stockholder Support
Agreement.

        NOW, THEREFORE, in consideration of the foregoing and the respective
representations, warranties, covenants and agreements set forth below, the
parties agree as follows:


                                   ARTICLE I.

                                   THE MERGERS

        Section 1.1. Certificate of Incorporation and Bylaws of Parent
Doubletree and Promus shall cause the Certificate of Incorporation and Bylaws of
Parent to be amended prior to the Effective Time (as defined in Section 1.4) to
be substantially in the form of Exhibit D and Exhibit E hereto, respectively.
From the date hereof until the Effective Time, Doubletree and Promus shall
consult with each other prior to causing or permitting Parent to take any action
and neither shall cause or permit Parent to take any action inconsistent with
the provisions of this Agreement without the written consent of the other.

        Section 1.2.  The Doubletree Merger Doubletree and Promus shall cause
Parent to form a wholly-owned subsidiary named Doubletree Acquisition Corp.
("Doubletree Sub") under the laws of the State of Delaware. Doubletree and
Promus will cause Parent to cause Doubletree Sub to execute and deliver this
Agreement. Upon the terms and subject to the provisions of this Agreement, and
in accordance with the Delaware General Corporation Code (the "DGCL"),
Doubletree Sub will merge with and into Doubletree (the "Doubletree Merger") at
the Effective Time (as defined in Section 1.4). Doubletree Sub will be formed
solely to facilitate the Doubletree Merger and will conduct no business or
activity other than in connection with the Doubletree Merger.

        Section 1.3. The Promus Merger Doubletree and Promus shall cause Parent
to form a wholly-owned subsidiary named Promus Acquisition Corp. ("Promus Sub")
under the laws of the State of Delaware. Doubletree and Promus will cause Parent
to cause Promus Sub to execute and deliver this Agreement. Upon the terms and
subject to the provisions of this Agreement, and in accordance with the DGCL,
Promus Sub will merge with and into Promus (the "Promus Merger" and together
with the Doubletree Merger, the "Mergers") at the Effective Time (as defined in
Section 1.4). Promus Sub will be formed solely to facilitate the Promus Merger
and will conduct no business or activity other than in connection with the
Promus Merger.

        Section 1.4. Effective Time of the Mergers Subject to the provisions of
this Agreement, a certificate of merger with respect to each Merger in such form
as is required by the relevant provisions of the DGCL (individually, a
"Certificate of Merger" with respect to one of 


                                       2


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the Mergers, and collectively with respect to both Mergers, the "Certificates of
Merger") shall be duly prepared, executed and acknowledged and thereafter
delivered to the Secretary of State of the State of Delaware for filing, as
provided in the DGCL, as early as practicable on the Closing Date (as defined in
Section 1.5). Each Merger shall become effective at such time as is specified in
the Certificate of Merger (the time at which both Mergers have become fully
effective being hereinafter referred to as the "Effective Time").

        Section 1.5. Closing The closing of the Mergers (the "Closing") will
take place at such time and place to be agreed upon by the parties hereto, on a
date to be specified by Promus and Doubletree, which shall be no later than the
second business day after satisfaction or, if permissible, waiver of the
conditions set forth in Article VI (the "Closing Date"), unless another date is
agreed to in writing by Promus and Doubletree.

        Section 1.6. Effect of the Mergers As a result of the Doubletree Merger,
the separate corporate existence of Doubletree Sub shall cease and Doubletree
shall continue as the surviving corporation (the "Doubletree Surviving
Corporation"). As a result of the Promus Merger, the separate corporate
existence of Promus Sub shall cease and Promus shall continue as the surviving
corporation (the "Promus Surviving Corporation" and together with the Doubletree
Surviving Corporation, the "Surviving Corporations"). Upon becoming effective,
the Mergers shall have the effects set forth in the DGCL. Without limiting the
generality of the foregoing, and subject thereto, at the Effective Time, (i) all
properties, rights, privileges, powers and franchises of Doubletree and
Doubletree Sub shall vest in the Doubletree Surviving Corporation, and all
debts, liabilities and duties of Doubletree and Doubletree Sub shall become the
debts, liabilities and duties of the Doubletree Surviving Corporation and (ii)
all properties, rights, privileges, powers and franchises of Promus and Promus
Sub shall vest in the Promus Surviving Corporation, and all debts, liabilities
and duties of Promus and Promus Sub shall become the debts, liabilities and
duties of the Promus Surviving Corporation.

        Section 1.7. Certificate of Incorporation and Bylaws of the Surviving
Corporations At the Effective Time, (i) the Certificate of Incorporation and
Bylaws of the Doubletree Surviving Corporation shall be amended to be identical
to the Certificate of Incorporation and Bylaws, respectively, of Doubletree Sub
as in effect immediately prior to the Effective Time (except that the name of
the Doubletree Surviving Corporation shall be Doubletree Inc.), in each case
until duly amended in accordance with applicable law, and (ii) the Certificate
of Incorporation and Bylaws of the Promus Surviving Corporation shall be amended
to be identical to the Certificate of Incorporation and Bylaws, respectively, of
Promus Sub as in effect immediately prior to the Effective Time (except that the
name of the Promus Surviving Corporation shall be Promus Acquisition Corp.), in
each case until duly amended in accordance with applicable law.

        Section 1.8.  Directors and Officers of the Surviving Corporations

          (a) Doubletree Surviving Corporation. The directors of Doubletree Sub
immediately prior to the Effective Time shall be the initial directors of the
Doubletree Surviving Corporation, each to hold office in accordance with the
Certificate of Incorporation and Bylaws of the Doubletree Surviving Corporation.
The officers of Doubletree immediately prior to the Effective Time shall be the
initial officers of the Doubletree Surviving Corporation, each to hold


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office in accordance with the Certificate of Incorporation and Bylaws of the 
Doubletree Surviving Corporation.

          (b) Promus Surviving Corporation. The directors of Promus Sub
immediately prior to the Effective Time shall be the initial directors of the
Promus Surviving Corporation, each to hold office in accordance with the
Certificate of Incorporation and Bylaws of the Promus Surviving Corporation. The
officers of Promus immediately prior to the Effective Time shall be the initial
officers of the Promus Surviving Corporation, each to hold office in accordance
with the Certificate of Incorporation and Bylaws of the Promus Surviving
Corporation.


                                   ARTICLE II.

                            CONVERSION OF SECURITIES

        Section 2.1. Conversion of Doubletree Capital Stock At the Effective
Time, by virtue of the Doubletree Merger and without any action on the part of
any of the parties hereto or the holders of any shares of Common Stock, par
value $.01 per share, of Doubletree ("Doubletree Common Stock") or common stock
of Doubletree Sub:

          (a) Capital Stock of Doubletree Sub. Each issued and outstanding share
of the common stock, par value $.01 per share, of Doubletree Sub shall be
converted into and become one fully paid and nonassessable share of Common
Stock, par value $.01 per share, of the Doubletree Surviving Corporation.

          (b) Cancellation of Treasury Stock and Promus-Owned Stock. All shares
of Doubletree Common Stock that are owned by Doubletree as treasury stock and
any shares of Doubletree Common Stock owned by Promus or any wholly-owned
Subsidiary (as defined in Section 3.1) of Promus shall be canceled and retired
and shall cease to exist and no stock of Parent or other consideration shall be
delivered in exchange therefor.

          (c) Exchange Ratio for Doubletree Common Stock. Subject to Section
2.4(e), each issued and outstanding share of Doubletree Common Stock (other than
shares to be canceled in accordance with Section 2.1(b)) shall be converted into
the right to receive one share (the "Doubletree Exchange Ratio") of Common
Stock, par value $.01 per share, of Parent ("Parent Common Stock"). All such
shares of Doubletree Common Stock, when so converted, shall no longer be
outstanding and shall automatically be canceled and retired and shall cease to
exist, and each holder of a certificate representing any such shares shall cease
to have any ownership or other rights with respect thereto, except the right to
receive the shares of Parent Common Stock and an amount equal to certain
dividends and other distributions described in Section 2.4(c), without interest,
upon the surrender of such certificate in accordance with Section 2.4.

        Section 2.2. Conversion of Promus Capital Stock At the Effective Time,
by virtue of the Promus Merger and without any action on the part of any of the
parties hereto or the holders of any shares of Common Stock, par value $.10 per
share, of Promus ("Promus Common Stock") or common stock of Promus Sub:


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          (a) Capital Stock of Promus Sub. Each issued and outstanding share of
the common stock, par value $.01 per share, of Promus Sub shall be converted
into and become one fully paid and nonassessable share of Common Stock, par
value $.01 per share, of the Promus Surviving Corporation.

          (b) Cancellation of Treasury Stock and Doubletree-Owned Stock. All
shares of Promus Common Stock that are owned by Promus as treasury stock and any
shares of Promus Common Stock owned by Doubletree or any wholly-owned Subsidiary
(as defined in Section 3.1) of Doubletree shall be canceled and retired and
shall cease to exist and no stock of Parent or other consideration shall be
delivered in exchange therefor.

          (c) Exchange Ratio for Promus Common Stock. Subject to Section 2.4(e),
each issued and outstanding share of Promus Common Stock (other than shares to
be canceled in accordance with Section 2.2(b)) shall be converted into the right
to receive 0.925 shares (the "Promus Exchange Ratio") of Parent Common Stock.
All such shares of Promus Common Stock, when so converted, shall no longer be
outstanding and shall automatically be canceled and retired and shall cease to
exist, and each holder of a certificate representing any such shares shall cease
to have any ownership or other rights with respect thereto, except the right to
receive the shares of Parent Common Stock, any cash in lieu of fractional shares
of Parent Common Stock to be issued or paid in consideration therefor and an
amount equal to certain dividends and other distributions described in Section
2.4(c), in each case upon the surrender of such certificate in accordance with
Section 2.4 and without interest.

        Section 2.3. Cancellation of Parent Stock. At the Effective Time, by
virtue of the Mergers and without any action on the part of any holder of any
capital stock of Doubletree, Promus or Parent, each share of Parent Common Stock
issued and outstanding immediately prior to the Effective Time shall be
surrendered and canceled, and the amount paid by Doubletree and Promus for the
shares of Parent Common Stock held by them shall be returned by Parent to them.

        Section 2.4. Exchange of Certificates The procedures for exchanging
certificates which prior to the Effective Time represented shares of Doubletree
Common Stock and Promus Common Stock for certificates representing Parent Common
Stock pursuant to the Mergers are as follows:

          (a) Exchange Agent. As of the Effective Time, Parent shall deposit
with a bank or trust company designated by Promus and Doubletree (the "Exchange
Agent"), for the benefit of the holders of shares of Doubletree Common Stock and
shares of Promus Common Stock outstanding immediately prior to the Effective
Time, for exchange in accordance with this Section 2.4, through the Exchange
Agent, certificates representing the shares of Parent Common Stock and, with
respect to shares of Promus Common Stock, cash in lieu of fractional shares
(such shares of Parent Common Stock and cash in lieu of fractional shares,
together with any dividends or distributions with respect thereto, being
hereinafter referred to as the "Exchange Fund"), issuable pursuant to Sections
2.1 and 2.2 in exchange for shares of Doubletree Common Stock and Promus Common
Stock, respectively, outstanding immediately prior to the Effective Time.

          (b) Exchange Procedures. As soon as reasonably practicable after the
Effective Time, the Exchange Agent shall mail to each holder of record of a
certificate or certificates which 


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immediately prior to the Effective Time represented outstanding shares of
Doubletree Common Stock or Promus Common Stock (collectively, the
"Certificates") whose shares were converted pursuant to Section 2.1 or Section
2.2 into the right to receive shares of Parent Common Stock (i) a letter of
transmittal (which shall specify that delivery shall be effected, and risk of
loss and title to the Certificates shall pass, only upon delivery of the
Certificates to the Exchange Agent and shall be in such form and have such other
provisions as Doubletree and Promus may reasonably specify) and (ii)
instructions for effecting the surrender of the Certificates in exchange for
certificates representing shares of Parent Common Stock (plus cash in lieu of
fractional shares, if any, of Parent Common Stock as provided below). Upon
surrender of a Certificate for cancellation to the Exchange Agent or to such
other agent or agents as may be appointed by Parent, together with such letter
of transmittal, duly executed, the holder of such Certificate shall be entitled
to receive in exchange therefor a certificate representing that number of whole
shares of Parent Common Stock, the amount of any cash payable in lieu of
fractional shares of Parent Common Stock (with respect to shares of Promus
Common Stock) and an amount equal to certain dividends and other distributions
which such holder has the right to receive pursuant to the provisions of this
Article II, and the Certificate so surrendered shall immediately be canceled. In
the event of a transfer of ownership of Doubletree Common Stock or Promus Common
Stock prior to the Effective Time which is not registered in the transfer
records of Doubletree or Promus, respectively, a certificate representing the
number of shares of Parent Common Stock issuable and any amounts payable in
accordance with this Agreement may be issued and paid to a transferee if the
Certificate representing such Doubletree Common Stock or Promus Common Stock is
presented to the Exchange Agent, accompanied by all documents required to
evidence and effect such transfer and by evidence that any applicable stock
transfer taxes have been paid.

          (c) Distributions With Respect to Unexchanged Shares. No amount in
respect of dividends or other distributions declared or made after the Effective
Time with respect to Parent Common Stock with a record date after the Effective
Time shall be paid to the holder of any unsurrendered Certificate with respect
to the shares of Parent Common Stock the holder thereof is entitled to receive
in respect thereof and no cash payment in lieu of fractional shares shall be
paid to any such holder pursuant to subsection (e) below until the holder of
record of such Certificate shall surrender such Certificate to Parent in
accordance herewith. Subject to the effect of applicable laws, following
surrender of any such Certificate, there shall be paid to the record holder of
the certificates representing whole shares of Parent Common Stock issued in
exchange therefor, without interest, (i) at the time of such surrender, the
amount of any cash payable in lieu of a fractional share of Parent Common Stock
to which such holder is entitled pursuant to subsection (e) below and an amount
equal to the amount of dividends or other distributions with a record date after
the Effective Time previously paid with respect to whole shares of Parent Common
Stock, and (ii) at the appropriate payment date, an amount equal to the amount
of dividends or other distributions with a record date after the Effective Time
but prior to surrender and a payment date subsequent to surrender payable with
respect to whole shares of Parent Common Stock, in each case without interest.

          (d) No Further Ownership Rights in Doubletree Common Stock and Promus
Common Stock. All shares of Parent Common Stock issued upon the surrender for
exchange of Certificates in accordance with the terms hereof (including any cash
paid pursuant to subsection (c) or (e) of this Section 2.4) shall be deemed to
have been issued in full satisfaction of all rights 


                                       6


   14


pertaining to the shares of Doubletree Common Stock or Promus Common Stock
theretofore represented by such Certificates, subject, however, to the
applicable Surviving Corporation's obligation to pay any dividends or make any
other distributions with a record date prior to the Effective Time which may
have been declared or made by Doubletree on such shares of Doubletree Common
Stock or by Promus on such shares of Promus Common Stock, as the case may be, in
accordance with the terms of this Agreement (to the extent permitted under
Section 5.1) prior to the date hereof and which remain unpaid at the Effective
Time, and from and after the Effective Time there shall be no further
registration of transfers on the stock transfer books of the Doubletree
Surviving Corporation or the Promus Surviving Corporation, as the case may be,
of the shares of Doubletree Common Stock or Promus Common Stock, respectively,
which were outstanding immediately prior to the Effective Time. If, after the
Effective Time, Certificates are presented to one of the Surviving Corporations
or Parent for any reason, such Certificates shall be canceled and exchanged as
provided in this Section 2.4.

          (e) No Fractional Shares. No certificate or scrip representing
fractional shares of Parent Common Stock shall be issued upon the surrender for
exchange of Certificates representing shares of Promus Common Stock, and such
fractional share interests will not entitle the owner thereof to vote or to any
other rights of a stockholder of Parent. Notwithstanding any other provision of
this Agreement, each holder of shares of Promus Common Stock outstanding
immediately prior to the Effective Time exchanged pursuant to the Promus Merger
who would otherwise have been entitled to receive a fraction of a share of
Parent Common Stock (after taking into account all Certificates delivered by
such holder) shall receive, in lieu thereof, cash (without interest) in an
amount equal to such fractional part of a share of Parent Common Stock
multiplied by the per share sales price of Parent Common Stock (as reported on
the New York Stock Exchange Composite Tape) on the closing of the first day of
regular-way trading of Parent Common Stock on the New York Stock Exchange (the
"NYSE") after the Effective Time.

          (f) Termination of Exchange Fund. Any portion of the Exchange Fund
which remains undistributed to the former stockholders of Doubletree or Promus
for 180 days after the Effective Time shall be delivered to Parent upon demand,
and any former stockholder of Doubletree or Promus who has not previously
complied with this Section 2.4 shall thereafter look only to Parent for payment
of such former stockholder's claim for Parent Common Stock, any cash in lieu of
fractional shares of Parent Common Stock and any amounts in respect of dividends
or distributions with respect to Parent Common Stock.

          (g) No Liability. None of Doubletree, Promus, Parent or the Exchange
Agent shall be liable to any holder of shares of Doubletree Common Stock or
Promus Common Stock, as the case may be, for any shares of Parent Common Stock
(or cash in lieu of fractional shares of Parent Common Stock or any dividends or
distributions with respect thereto) delivered to a public official pursuant to
any applicable abandoned property, escheat or similar law.

          (h) Withholding Rights. Parent and each of the Surviving Corporations
shall be entitled to deduct and withhold from the consideration otherwise
payable pursuant to this Agreement to any holder of Certificates which prior to
the Effective Time represented shares of Doubletree Common Stock or Promus
Common Stock such amounts as it is required to deduct and withhold with respect
to the making of such payment under the Code, or any provision of state, local
or foreign tax law. To the extent that amounts are so withheld by Parent or one
of the 


                                       7


   15


Surviving Corporations, as the case may be, such withheld amounts shall be
treated for all purposes of this Agreement as having been paid to the holder of
the shares of Doubletree Common Stock or Promus Common Stock, as the case may
be, in respect of which such deduction and withholding was made.

          (i) Lost Certificates. If any Certificate shall have been lost, stolen
or destroyed, upon the making of an affidavit of that fact by the person
claiming such Certificate to be lost, stolen or destroyed and, if required by
Parent or one of the Surviving Corporations, the posting by such person of a
bond in such reasonable amount as Parent or such Surviving Corporation may
direct as indemnity against any claim that may be made against it with respect
to such Certificate, the Exchange Agent will issue in exchange for such lost,
stolen or destroyed Certificate the shares of Parent Common Stock and any cash
in lieu of fractional shares, and unpaid dividends and distributions on shares
of Parent Common Stock deliverable in respect thereof pursuant to this
Agreement.

          (j) Affiliates. Notwithstanding anything herein to the contrary,
Certificates surrendered for exchange by any Affiliate (as defined in Section
5.12) of Doubletree or Promus shall not be exchanged until (i) Parent has
received an Affiliate Agreement (as defined in Section 5.12) from such Affiliate
or (ii) until the later of such date as such shares of Parent Common Stock are
freely tradable without jeopardizing the pooling of interests accounting
treatment of the Mergers and without violating the Securities Act of 1933, as
amended (the "Securities Act").


                                  ARTICLE III.

                  REPRESENTATIONS AND WARRANTIES OF DOUBLETREE

        Doubletree represents and warrants to Promus that the statements
contained in this Article III are true and correct except as set forth herein
and in the disclosure schedule delivered by Doubletree to Promus on or before
the date of this Agreement (the "Doubletree Disclosure Schedule"). The
Doubletree Disclosure Schedule shall be arranged in paragraphs corresponding to
the numbered and lettered paragraphs contained in this Article III and the
disclosure in any paragraph shall qualify other paragraphs in this Article III
only to the extent that it is reasonably apparent from a reading of such
disclosure that it also qualifies or applies to such other paragraphs.

        Section 3.1. Organization of Doubletree Each of Doubletree and its
Subsidiaries (as defined below) is duly organized, validly existing and in good
standing under the laws of the jurisdiction of its organization, has all
requisite power to own, lease and operate its property and to carry on its
business as now being conducted and as proposed to be conducted, and is duly
qualified to do business and is in good standing as a foreign corporation or
other entity in each jurisdiction in which the failure to be so qualified would
have a material adverse effect on the business, properties, financial condition
or results of operations of Doubletree and its Subsidiaries, taken as a whole
(an "Doubletree Material Adverse Effect"). A true and correct copy of the
Certificate of Incorporation and Bylaws of Doubletree has been delivered to
Promus. Except as set forth in Doubletree SEC Reports (as defined in Section
3.4) filed prior to the date hereof, neither Doubletree nor any of its
Subsidiaries directly or indirectly owns (other than ownership 


                                       8


   16


interests in Doubletree or in one or more of its Subsidiaries) any equity or
similar interest in, or any interest convertible into or exchangeable or
exercisable for, any corporation, partnership, joint venture or other business
association or entity, excluding (i) securities in any publicly traded company
held for investment by Doubletree and comprising less than five percent (5%) of
the outstanding stock of such company and (ii) any investment or series of
related investments with a book value of less than $15 million. As used in this
Agreement, the word "Subsidiary" means, with respect to any party, any
corporation or other organization, whether incorporated or unincorporated, of
which (i) such party or any other Subsidiary of such party is a general partner
(excluding partnerships the general partnership interests of which held by such
party or any Subsidiary of such party do not have a majority of the economic
interests in such partnership) or (ii) at least a majority of the securities or
other interests having by their terms ordinary voting power to elect a majority
of the Board of Directors or others performing similar functions with respect to
such corporation or other organization is directly or indirectly owned or
controlled by such party or by any one or more of its Subsidiaries, or by such
party and one or more of its Subsidiaries.

        Section 3.2. Doubletree Capital Structure. a) The authorized capital
stock of Doubletree consists of 100,000,000 shares of Common Stock, $.01 par
value, and 5,000,000 shares of Preferred Stock, $.01 par value ("Doubletree
Preferred Stock"). As of the date hereof, (i) 39,688,458 shares of Doubletree
Common Stock were issued and outstanding, all of which are validly issued, fully
paid and nonassessable and (ii) no shares of Doubletree Common Stock were held
in the treasury of Doubletree or by Subsidiaries of Doubletree. The Doubletree
Disclosure Schedule shows the number of shares of Doubletree Common Stock
reserved for future issuance pursuant to stock options granted and outstanding
as of the date hereof and the plans under which such options were granted
(collectively, the "Doubletree Stock Plans"). As of the date of this Agreement,
none of the shares of Doubletree Preferred Stock is issued and outstanding.
There are no obligations, contingent or otherwise, of Doubletree or any of its
Subsidiaries to repurchase, redeem or otherwise acquire any shares of Doubletree
Common Stock or the capital stock of any Subsidiary or to provide funds to or
make any material investment (in the form of a loan, capital contribution or
otherwise) in any such Subsidiary or any other entity other than guarantees of
bank obligations or indebtedness for borrowed money of Subsidiaries entered into
in the ordinary course of business and other than any obligation the failure of
which to perform or satisfy would not have a Doubletree Material Adverse Effect.
All of the outstanding shares of capital stock or other ownership interests of
each of Doubletree's Subsidiaries are duly authorized, validly issued, fully
paid and nonassessable and all such shares (other than directors' qualifying
shares in the case of foreign Subsidiaries) are owned by Doubletree or another
Subsidiary of Doubletree free and clear of all security interests, liens,
claims, pledges, agreements, limitations in Doubletree's voting rights, charges
or other encumbrances of any nature.

          (b) Except as set forth in this Section 3.2 or as reserved for future
grants of options under the Doubletree Stock Plans or the Promus Stock Option
Agreement and except for the preferred stock purchase rights issued and issuable
under the Rights Agreement dated as of September 1, 1997 between Doubletree and
Harris Trust Company of California (the "Doubletree Rights Plan"), options to
purchase an aggregate of 20,000 shares of Doubletree Common Stock, issued on
June 30, 1994, to GE Investment Hotel Partners I, Limited Partnership and the
Warrants to purchase an aggregate of 262,753 shares of Doubletree Common Stock,


                                       9


   17


issued on November 8, 1996, to PT Investments Inc. (the "GEPT Warrant"), (i)
there are no shares of capital stock of any class of Doubletree, or any security
exchangeable into or exercisable for such equity securities, issued, reserved
for issuance or outstanding; (ii) there are no options, warrants, equity
securities, calls, rights, commitments or agreements of any character to which
Doubletree or any of its Subsidiaries is a party or by which it is bound
obligating Doubletree or any of its Subsidiaries to issue, deliver or sell, or
cause to be issued, delivered or sold, additional shares of capital stock or
other ownership interests of Doubletree or any of its Subsidiaries or obligating
Doubletree or any of its Subsidiaries to grant, extend, accelerate the vesting
of or enter into any such option, warrant, equity security, call, right,
commitment or agreement; and (iii) to the best knowledge of Doubletree, there
are no voting trusts, proxies or other voting agreements or understandings with
respect to the shares of capital stock of Doubletree. All shares of Doubletree
Common Stock subject to issuance as specified in this Section 3.2 are duly
authorized and, upon issuance on the terms and conditions specified in the
instruments pursuant to which they are issuable, shall be validly issued, fully
paid and nonassessable.

        Section 3.3. Authority; No Conflict; Required Filings and Consents. a)
Doubletree has all requisite corporate power and authority to enter into this
Agreement and the Stock Option Agreements and to consummate the transactions
contemplated by this Agreement and the Stock Option Agreements. The execution
and delivery of this Agreement and the Stock Option Agreements and the
consummation of the transactions contemplated by this Agreement and the Stock
Option Agreements by Doubletree have been duly authorized by all necessary
corporate action on the part of Doubletree, subject only to the approval and
adoption of this Agreement and the Doubletree Merger by Doubletree's
stockholders under the DGCL. This Agreement and the Stock Option Agreements have
been duly executed and delivered by Doubletree and constitute the valid and
binding obligations of Doubletree, enforceable in accordance with their terms,
subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting
creditors' rights and to general equity principles (the "Bankruptcy and Equity
Exception").

          (b) The execution and delivery of this Agreement and the Stock Option
Agreements by Doubletree does not, and the consummation of the transactions
contemplated by this Agreement and the Stock Option Agreements will not, (i)
conflict with, or result in any violation or breach of, any provision of the
Certificate of Incorporation or Bylaws of Doubletree or any of its Subsidiaries,
(ii) result in any violation or breach of, or constitute (with or without notice
or lapse of time, or both) a default (or give rise to a right of termination,
cancellation or acceleration of any obligation or loss of any material benefit)
under, or require a consent or waiver under, any of the terms, conditions or
provisions of any note, bond, mortgage, indenture, lease, contract or other
agreement, instrument or obligation to which Doubletree or any of its
Subsidiaries is a party or by which any of them or any of their properties or
assets may be bound (other than pursuant to the Credit Agreement dated as of
November 8, 1996 by and among Doubletree, Morgan Stanley Senior Funding, Inc.,
The Bank of Nova Scotia and the lenders identified therein) or (iii) conflict
with or violate any permit, concession, franchise, license, judgment, order,
decree, statute, law, 


                                       10


   18


ordinance, rule or regulation applicable to Doubletree or any of its
Subsidiaries or any of its or their properties or assets, except in the case of
(ii) and (iii) for any such conflicts, violations, defaults, terminations,
cancellations or accelerations which (x) are not, individually or in the
aggregate, reasonably likely to have a Doubletree Material Adverse Effect or (y)
would not substantially impair or delay the consummation of the Doubletree
Merger.

          (c) No consent, approval, order or authorization of, or registration,
declaration or filing with, any court, administrative agency or commission or
other governmental authority or instrumentality ("Governmental Entity") is
required by or with respect to Doubletree or any of its Subsidiaries in
connection with the execution and delivery of this Agreement and the Stock
Option Agreements or the consummation of the transactions contemplated hereby or
thereby, except for (i) the filing of the pre-merger notification report under
the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended ("HSR
Act"), (ii) the filing of a Certificate of Merger with respect to the Doubletree
Merger with the Delaware Secretary of State, (iii) the filing of the Joint Proxy
Statement/Prospectus (as defined in Section 3.16 below) with the Securities and
Exchange Commission (the "SEC") in accordance with the Securities Exchange Act
of 1934, as amended (the "Exchange Act"), and the Securities Act, (iv) such
consents, approvals, orders, authorizations, permits, filings or registrations
related to, or arising out of, compliance with statutes, rules or regulations
regulating the consumption, sale or serving of alcoholic beverages, (v) such
consents, approvals, orders, authorizations, registrations, declarations and
filings as may be required under applicable state securities laws and the laws
of any foreign country and (vi) such other consents, authorizations, filings,
approvals and registrations which, if not obtained or made, would not (x) be
reasonably likely to have a Doubletree Material Adverse Effect or (y)
substantially impair or delay the consummation of the Doubletree Merger.

        Section 3.4.  SEC Filings; Financial Statements.

          (a) Doubletree has filed and made available to Promus all forms,
reports and documents required to be filed by Doubletree with the SEC since
January 1, 1996 (collectively, the "Doubletree SEC Reports"). The Doubletree SEC
Reports (i) at the time filed, complied in all material respects with the
applicable requirements of the Securities Act and the Exchange Act, as the case
may be, and (ii) did not at the time they were filed (or if amended or
superseded by a filing prior to the date of this Agreement, then on the date of
such filing) contain any untrue statement of a material fact or omit to state a
material fact required to be stated in such Doubletree SEC Reports or necessary
in order to make the statements in such Doubletree SEC Reports, in the light of
the circumstances under which they were made, not misleading. None of
Doubletree's Subsidiaries is required to file any forms, reports or other
documents with the SEC.

          (b) Each of the consolidated financial statements (including, in each
case, any related notes) of Doubletree contained in the Doubletree SEC Reports
complied as to form in all material respects with the applicable published rules
and regulations of the SEC with respect thereto, was prepared in accordance with
generally accepted accounting principles applied on a consistent basis
throughout the periods involved (except as may be indicated in the notes to such
financial statements or, in the case of unaudited statements, as permitted by
Form 10-Q under the Exchange Act) and fairly presented the consolidated
financial position of Doubletree and its Subsidiaries as of the dates and the
consolidated results of its operations and cash flows for the 


                                       11


   19


periods indicated, except that the unaudited interim financial statements were
or are subject to normal and recurring year-end adjustments which were not or
are not expected to be material in amount. The audited balance sheet of
Doubletree as of December 31, 1996 is referred to herein as the "Doubletree
Balance Sheet."

        Section 3.5. No Undisclosed Liabilities Except as disclosed in the
Doubletree SEC Reports filed prior to the date hereof, and except for normal or
recurring liabilities incurred since December 31, 1996 in the ordinary course of
business consistent with past practices, Doubletree and its Subsidiaries do not
have any liabilities, either accrued, contingent or otherwise (whether or not
required to be reflected in financial statements in accordance with generally
accepted accounting principles), and whether due or to become due, which
individually or in the aggregate are reasonably likely to have a Doubletree
Material Adverse Effect.

        Section 3.6. Absence of Certain Changes or Events Except as disclosed in
the Doubletree SEC Reports filed prior to the date hereof, since the date of the
Doubletree Balance Sheet, Doubletree and its Subsidiaries have conducted their
businesses only in the ordinary course and in a manner consistent with past
practice and, since such date, there has not been (i) any event, development,
state of affairs or condition, or series or combination of events, developments,
states of affairs or conditions, which, individually or in the aggregate, has
had or is reasonably likely to have a Doubletree Material Adverse Effect (other
than events, developments, states of affairs or conditions that are the effect
or result of actions taken by Promus or economic factors affecting the economy
as a whole or the industry in which Doubletree competes); (ii) any damage,
destruction or loss (whether or not covered by insurance) with respect to
Doubletree or any of its Subsidiaries which is reasonably likely to have a
Doubletree Material Adverse Effect; (iii) any material change by Doubletree in
its accounting methods, principles or practices to which Promus has not
previously consented in writing; (iv) any revaluation by Doubletree of any of
its assets which is reasonably likely to have a Doubletree Material Adverse
Effect; or (v) any other action or event that would have required the consent of
Promus pursuant to Section 5.1 of this Agreement had such action or event
occurred after the date of this Agreement other than such actions or events
that, individually or in the aggregate, have not had or are not reasonably
likely to have a Doubletree Material Adverse Effect.

        Section 3.7.  Taxes.

          (a) For the purposes of this Agreement, a "Tax" or, collectively,
"Taxes," means any and all federal, state, local and foreign taxes, assessments
and other governmental charges, duties, impositions and liabilities, including
taxes based upon or measured by gross receipts, income, profits, sales, use and
occupation, and value added, ad valorem, transfer, gains, franchise,
withholding, payroll, recapture, employment, excise, unemployment insurance,
social security, business license, occupation, business organization, stamp,
environmental and property taxes, together with all interest, penalties and
additions imposed with respect to such amounts. For purposes of this Agreement,
"Taxes" also includes any obligations under any agreements or arrangements with
any other person with respect to Taxes of such other person (including pursuant
to Treas. Reg. Section 1.1502-6 or comparable provisions of state, local or
foreign tax law) and including any liability for Taxes of any predecessor
entity.


                                       12


   20


          (b) Doubletree and each of its Subsidiaries have (i) filed all
federal, state, local and foreign Tax returns and reports required to be filed
by them prior to the date of this Agreement (taking into account all applicable
extensions), (ii) paid or accrued all Taxes due and payable, and (iii) paid or
accrued all Taxes for which a notice of assessment or collection has been
received (other than amounts being contested in good faith by appropriate
proceedings), except in the case of clauses (i), (ii) or (iii) for any such
filings, payments or accruals that are not reasonably likely, individually or in
the aggregate, to have a Doubletree Material Adverse Effect. Neither the
Internal Revenue Service (the "IRS") nor any other taxing authority has asserted
any claim for Taxes, or to the actual knowledge of the executive officers of
Doubletree, is threatening to assert any claims for Taxes, which claims,
individually or in the aggregate, are reasonably likely to have a Doubletree
Material Adverse Effect. Doubletree and each of its Subsidiaries have withheld
or collected and paid over to the appropriate governmental authorities (or are
properly holding for such payment) all Taxes required by law to be withheld or
collected, except for amounts that are not reasonably likely, individually or in
the aggregate, to have a Doubletree Material Adverse Effect. Neither Doubletree
nor any of its Subsidiaries has made an election under Section 341(f) of the
Code, except for any such election that shall not have a Doubletree Material
Adverse Effect. There are no liens for Taxes upon the assets of Doubletree or
any of its Subsidiaries (other than liens for Taxes that are not yet due or
delinquent or that are being contested in good faith by appropriate
proceedings), except for liens that are not reasonably likely, individually or
in the aggregate, to have a Doubletree Material Adverse Effect.

          (c) Neither Doubletree nor any of its Subsidiaries is or has been a
member of an affiliated group of corporations filing a consolidated federal
income tax return (or a group of corporations filing a consolidated, combined or
unitary income tax return under comparable provisions of state, local or foreign
tax law) for any taxable period beginning on or after the taxable period ending
December 31, 1993, other than a group the common parent of which is or was
Doubletree or any Subsidiary of Doubletree.

          (d) Neither Doubletree nor any of its Subsidiaries has any obligation
under any agreement or arrangement with any other person with respect to Taxes
of such other person (including pursuant to Treas. Reg. Section 1.1502-6 or
comparable provisions of state, local or foreign tax law) and including any
liability for Taxes of any predecessor entity, except for obligations that are
not reasonably likely, individually or in the aggregate, to have a Doubletree
Material Adverse Effect.

        Section 3.8.  Properties.

          (a) Neither Doubletree nor any of its Subsidiaries is in default under
any leases for real property providing for the occupancy, in each case, of (i) a
hotel or (ii) other facilities in excess of 50,000 square feet (collectively
"Material Lease(s)"), except where the existence of such defaults, individually
or in the aggregate, is not reasonably likely to have a Doubletree Material
Adverse Effect.

          (b) With respect to each item of real property that Doubletree or any
of its Subsidiaries owns, except for such matters that, individually or in the
aggregate, are not reasonably likely to have a Doubletree Material Adverse
Effect: (i) Doubletree or its Subsidiary has good and clear record and
marketable title to such property, insurable by a recognized 


                                       13


   21


national title insurance company at standard rates, free and clear of any
security interest, easement, covenant or other restriction, except for recorded
easements, covenants and other restrictions which do not materially impair the
current uses or occupancy of such property; and (ii) the improvements
constructed on such property are in good condition, and all mechanical and
utility systems servicing such improvements are in good condition, free in each
case of material defects.

        Section 3.9. Intellectual Property Doubletree owns, or is licensed or
otherwise possesses legally enforceable rights to use, all trademarks, trade
names, service marks, copyrights, and any applications for such trademarks,
trade names, service marks and copyrights, know-how, computer software programs
or applications and tangible or intangible proprietary information or material
that are necessary to conduct the business of Doubletree as currently conducted,
subject to such exceptions that, individually and in the aggregate, would not be
reasonably likely to have a Doubletree Material Adverse Effect. Doubletree has
no knowledge of any assertion or claim challenging the validity of any of such
intellectual property.

        Section 3.10. Agreements, Contracts and Commitments.

          (a) Doubletree has not breached, or received in writing any claim or
notice that it has breached, any of the terms or conditions of any material
agreement, contract or commitment filed as an exhibit to the Doubletree SEC
Reports ("Doubletree Material Contracts") in such a manner as, individually or
in the aggregate, are reasonably likely to have a Doubletree Material Adverse
Effect. Each Doubletree Material Contract that has not expired by its terms is
in full force and effect.

          (b) Without limiting Section 3.10(a), each of the management contracts
and franchise agreements to which Doubletree is a party and each of Doubletree's
Material Leases (i) is valid and binding in accordance with its terms and is in
full force and effect, (ii) neither Doubletree nor any of its Subsidiaries is in
default in any material respect thereof, nor does any condition exist that with
notice or lapses of time or both would constitute a material default thereunder,
and (iii) no party has given any written or (to the knowledge of Doubletree)
oral notice of termination or cancellation thereof or that such party intends to
assert a breach thereof, or seek to terminate or cancel, any such agreement,
contract or lease, in each case as a result of the transactions contemplated
hereby, subject to such exceptions that, individually and in the aggregate,
would not be reasonably likely to have a Doubletree Material Adverse Effect.

        Section 3.11. Litigation Except as described in the Doubletree SEC
Reports filed prior to the date hereof, there is no action, suit or proceeding,
claim, arbitration or investigation against Doubletree pending or as to which
Doubletree has received any written notice of assertion, which, individually or
in the aggregate, is reasonably likely to have a Doubletree Material Adverse
Effect or a material adverse effect on the ability of Doubletree to consummate
the transactions contemplated by this Agreement.

        Section 3.12. Environmental Matters.

          (a) To the knowledge of Doubletree and except as disclosed in the
Doubletree SEC Reports filed prior to the date hereof and except for such
matters that, individually or in the 


                                       14


   22


aggregate, are not reasonably likely to have a Doubletree Material Adverse
Effect: (i) Doubletree and its Subsidiaries have complied with all applicable
Environmental Laws (as defined in Section 3.12(b)); (ii) the properties
currently owned or operated by Doubletree and its Subsidiaries (including soils,
groundwater, surface water, buildings or other structures) are not contaminated
with any Hazardous Substances (as defined in Section 3.12(c)); (iii) the
properties formerly owned or operated by Doubletree or any of its Subsidiaries
were not contaminated with Hazardous Substances during the period of ownership
or operation by Doubletree or any of its Subsidiaries; (iv) neither Doubletree
nor its Subsidiaries are subject to liability for any Hazardous Substance
disposal or contamination on any third party property; (v) neither Doubletree
nor any of its Subsidiaries has been associated with any release or threat of
release of any Hazardous Substance; (vi) neither Doubletree nor any of its
Subsidiaries has received any notice, demand, letter, claim or request for
information alleging that Doubletree or any of its Subsidiaries may be in
violation of or liable under any Environmental Law; (vii) neither Doubletree nor
any of its Subsidiaries is subject to any orders, decrees, injunctions or other
arrangements with any Governmental Entity or is subject to any indemnity or
other agreement with any third party relating to liability under any
Environmental Law or relating to Hazardous Substances; and (viii) there are no
circumstances or conditions involving Doubletree or any of its Subsidiaries that
could reasonably be expected to result in any claims, liability, investigations,
costs or restrictions on the ownership, use or transfer of any property of
Doubletree or any of its Subsidiaries pursuant to any Environmental Law.

          (b) As used herein, the term "Environmental Law" means any federal,
state, local or foreign law, regulation, order, decree, permit, authorization,
opinion, common law or agency requirement relating to: (A) the protection,
investigation or restoration of the environment, health and safety, or natural
resources, (B) the handling, use, presence, disposal, release or threatened
release of any Hazardous Substance or (C) noise, odor, wetlands, pollution,
contamination or any injury or threat of injury to persons or property.

          (c) As used herein, the term "Hazardous Substance" means any substance
that is: (A) listed, classified or regulated pursuant to any Environmental Law;
(B) any petroleum product or by-product, asbestos-containing material,
lead-containing paint or plumbing, polychlorinated biphenyls, radioactive
materials or radon; or (C) any other substance which is the subject of
regulatory action by any Governmental Entity pursuant to any Environmental Law.

        Section 3.13. Employee Benefit Plans.

          (a) For purposes of this Agreement, the "Doubletree Employee Plans"
shall mean all employee benefit plans (as defined in Section 3(3) of the
Employee Retirement Income Security Act of 1974, as amended ("ERISA")) and all
bonus, stock option, stock purchase, incentive, deferred compensation,
supplemental retirement, severance and other similar employee benefit plans, and
all unexpired severance agreements, written or otherwise, for the benefit of, or
relating to, any current or former employee of Doubletree or any trade or
business (whether or not incorporated) which is under common control with
Doubletree within the meaning of Section 414 of the Code (an "ERISA Affiliate"),
or any Subsidiary of Doubletree (together, the "Doubletree Employee Plans").
Doubletree has listed in Section 3.13 of the Doubletree Disclosure Schedule all
Doubletree Employee Plans other plans that are "employee welfare benefit plans"
within the meaning of Section 3(1) of ERISA.


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          (b) With respect to each Doubletree Employee Plan, Doubletree has made
available to Promus, a true and correct copy of (i) the most recent annual
report (Form 5500) filed with the IRS, (ii) such Doubletree Employee Plan and
all amendments thereto, (iii) each trust agreement and group annuity contract,
if any, and all amendments thereto relating to such Doubletree Employee Plan and
(iv) the most recent actuarial report or valuation relating to a Doubletree
Employee Plan subject to Title IV of ERISA.

          (c) With respect to the Doubletree Employee Plans, individually and in
the aggregate, no event has occurred, and to the knowledge of Doubletree, there
exists no condition or set of circumstances in connection with which Doubletree
could be subject to any liability that is reasonably likely to have a Doubletree
Material Adverse Effect under ERISA, the Code or any other applicable law.

          (d) With respect to the Doubletree Employee Plans, individually and in
the aggregate, there are no funded benefit obligations for which contributions
have not been made or properly accrued and there are no unfunded benefit
obligations which have not been accounted for by reserves, or otherwise properly
footnoted in accordance with generally accepted accounting principles, on the
financial statements of Doubletree, except for obligations which, individually
or in the aggregate, are not reasonably likely to have a Doubletree Material
Adverse Effect.

          (e) Except as disclosed in the Doubletree SEC Reports filed prior to
the date of this Agreement, and except as provided for in this Agreement,
neither Doubletree nor any of its Subsidiaries is a party to any oral or written
(i) agreement with any officer or other key employee of Doubletree or any of its
Subsidiaries, the benefits of which are contingent, or the terms of which are
materially altered, upon the occurrence of a transaction involving Doubletree of
the nature contemplated by this Agreement, (ii) agreement with any officer of
Doubletree providing any term of employment or compensation guarantee extending
for a period longer than one year from the date hereof and for the payment of
compensation in excess of $100,000 per annum, or (iii) agreement or plan,
including any stock option plan, stock appreciation right plan, restricted stock
plan or stock purchase plan, any of the benefits of which will be increased, the
vesting of the benefits of which will be accelerated or the funding of benefits
of which will be required, by the occurrence of any of the transactions
contemplated by this Agreement or the value of any of the benefits of which will
be calculated on the basis of any of the transactions contemplated by this
Agreement.

        Section 3.14. Compliance With Laws Doubletree has complied with, is not
in violation of, and has not received any notices of violation with respect to,
any federal, state or local statute, law or regulation with respect to the
conduct of its business, or the ownership or operation of its business, except
for failures to comply or violations which, individually or in the aggregate,
have not had and are not reasonably likely to have a Doubletree Material Adverse
Effect.

        Section 3.15. Accounting and Tax Matters.

          (a) To the best knowledge of Doubletree, after consulting with its
independent auditors with respect to clause (i) below and its tax advisors with
respect to clause (ii) below, neither Doubletree nor any of its Affiliates (as
defined in Section 5.12) has taken or agreed to take any action which would (i)
prevent Parent from accounting for the business combination to be 


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effected by the Mergers as a pooling of interests or (ii) prevent the Doubletree
Merger from qualifying as a reorganization described in Section 368(a) of the
Code and/or, taken together with the Promus Merger, as a transfer of property to
Parent by holders of Doubletree Common Stock described in Section 351 of the
Code. Except as contemplated by the Doubletree Option Agreement, neither
Doubletree nor any of its Subsidiaries owns any shares of Promus Common Stock or
other securities convertible into shares of Promus Common Stock (exclusive of
any shares owned by Doubletree's employee benefit plans).

          (b) To the best knowledge of Doubletree, the stockholders of
Doubletree as a group have no present plan, intention or arrangement to sell or
otherwise dispose of such number of the shares of Parent Common Stock received
in the Doubletree Merger as would reduce their ownership in Parent Common Stock
to a number of shares having a value, as of the date of the Doubletree Merger,
of less than eighty percent (80%) of the value of all the formerly outstanding
stock of Doubletree as of the same date.

        Section 3.16. Registration Statement; Joint Proxy Statement/Prospectus.
The information to be supplied by Doubletree for inclusion in the registration
statement on Form S-4 pursuant to which shares of Parent Common Stock issued in
the Mergers will be registered under the Securities Act (the "Registration
Statement"), shall not at the time the Registration Statement is declared
effective by the SEC contain any untrue statement of a material fact or omit to
state any material fact required to be stated in the Registration Statement or
necessary in order to make the statements in the Registration Statement, in
light of the circumstances under which they were made, not misleading. The
information supplied by Doubletree for inclusion in the joint proxy
statement/prospectus to be sent to the stockholders of Promus and Doubletree in
connection with the meeting of Doubletree's stockholders (the "Doubletree
Stockholders' Meeting") and the meeting of Promus's stockholders (the "Promus
Stockholders' Meeting") to consider this Agreement and the Mergers (the "Joint
Proxy Statement/Prospectus") shall not, on the date the Joint Proxy
Statement/Prospectus is first mailed to stockholders of Doubletree or Promus, at
the time of the Doubletree Stockholders' Meeting and the Promus Stockholders'
Meeting and at the Effective Time, contain any statement which, at such time and
in light of the circumstances under which it shall be made, is false or
misleading with respect to any material fact, omit to state any material fact
necessary in order to make the statements made in the Joint Proxy
Statement/Prospectus not false or misleading, or omit to state any material fact
necessary to correct any statement in any earlier communication with respect to
the solicitation of proxies for the Doubletree Stockholders' Meeting or the
Promus Stockholders' Meeting which has become false or misleading. If at any
time prior to the Effective Time any event relating to Doubletree or any of its
Affiliates, officers or directors should be discovered by Doubletree which
should be set forth in an amendment to the Registration Statement or a
supplement to the Joint Proxy Statement/Prospectus, Doubletree shall promptly
inform Promus.

        Section 3.17. Labor Matters. Except as disclosed in the Doubletree SEC
Reports filed prior to the date hereof, neither Doubletree nor any of its
Subsidiaries is a party to or otherwise bound by any collective bargaining
agreement, contract or other agreement or understanding with a labor union or
labor organization, nor, as of the date hereof, is Doubletree or any of its
Subsidiaries the subject of any material proceeding asserting that Doubletree or
any of its Subsidiaries has committed an unfair labor practice or is seeking to
compel it to bargain with any 


                                       17


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labor union or labor organization nor, as of the date of this Agreement, is
there pending or, to the knowledge of the executive officers of Doubletree,
threatened, any material labor strike, dispute, walkout, work stoppage,
slow-down or lockout involving Doubletree or any of its Subsidiaries.

        Section 3.18. Insurance. All material fire and casualty, general
liability, business interruption, product liability, and sprinkler and water
damage insurance policies maintained by Doubletree or any of its Subsidiaries
are with reputable insurance carriers, provide full and adequate coverage for
all normal risks incident to the business of Doubletree and its Subsidiaries and
their respective properties and assets, and are in character and amount at least
equivalent to that carried by persons engaged in similar businesses and subject
to the same or similar perils or hazards, except for any such failures to
maintain insurance policies that, individually or in the aggregate, are not
reasonably likely to have a Doubletree Material Adverse Effect.

        Section 3.19. Doubletree Long-Range Plans. Doubletree has provided to
Promus copies of Doubletree's most recent long-range plans prepared in draft
form by Doubletree's management and Doubletree has not adopted any other
long-range plans since January 1, 1997.

        Section 3.20. Opinion of Financial Advisor. The financial advisor of
Doubletree, Morgan Stanley & Co. Incorporated, has delivered to Doubletree an
opinion dated the date of this Agreement to the effect that the Doubletree
Exchange Ratio is fair to the holders of Doubletree Common Stock from a
financial point of view.

        Section 3.21. No Existing Discussions. As of the date hereof, Doubletree
is not engaged, directly or indirectly, in any discussions or negotiations with
any other party with respect to an Acquisition Proposal (as defined in Section
5.3).

        Section 3.22. Section 203 of the DGCL Not Applicable. The restrictions
contained in Section 203 of the DGCL applicable to a "business combination" (as
defined in DGCL Section 203) will not apply to the authorization, execution,
delivery and performance of this Agreement or the Stock Option Agreements by
Doubletree or the Stockholder Support Agreement by the parties thereto or the
consummation of the Doubletree Merger by Doubletree. No other "fair price,"
"moratorium," "control share acquisition" or other similar anti-takeover statute
or regulation is applicable to Doubletree or (by reason of Doubletree's
participation therein) the Doubletree Merger or the other transactions
contemplated by this Agreement.

        Section 3.23. Doubletree Rights Plan. Under the terms of the Doubletree
Rights Plan, neither the execution of this Agreement, the Promus Stock Option
Agreement, the Stockholder Support Agreement, nor the transactions contemplated
hereby or thereby, will cause a Distribution Date to occur or cause the rights
issued pursuant to the Doubletree Rights Plan to become exercisable, and all
such rights shall become non-exercisable at the Effective Time.


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                                   ARTICLE IV.

                    REPRESENTATIONS AND WARRANTIES OF PROMUS

        Promus represents and warrants to Doubletree that the statements
contained in this Article IV are true and correct, except as set forth in the
disclosure schedule delivered by Promus to Doubletree on or before the date of
this Agreement (the "Promus Disclosure Schedule"). The Promus Disclosure
Schedule shall be arranged in paragraphs corresponding to the numbered and
lettered paragraphs contained in this Article IV and the disclosure in any
paragraph shall qualify other paragraphs in this Article IV only to the extent
that it is reasonably apparent from a reading of such document that it also
qualifies or applies to such other paragraphs.

        Section 4.1. Organization of Promus Each of Promus and its Subsidiaries
is duly organized, validly existing and in good standing under the laws of the
jurisdiction of its organization, has all requisite power to own, lease and
operate its property and to carry on its business as now being conducted and as
proposed to be conducted, and is duly qualified to do business and is in good
standing as a foreign corporation or other entity in each jurisdiction in which
the failure to be so qualified would have a material adverse effect on the
business, properties, financial condition or results of operations of Promus and
its Subsidiaries, taken as a whole (a "Promus Material Adverse Effect"). A true
and correct copy of the Certificate of Incorporation and Bylaws of Promus has
been delivered to Doubletree. Except as set forth in the Promus SEC Reports (as
defined in Section 4.4) filed prior to the date hereof, neither Promus nor any
of its Subsidiaries directly or indirectly owns (other than ownership interests
in Promus or in one or more of its Subsidiaries) any equity or similar interest
in, or any interest convertible into or exchangeable or exercisable for, any
corporation, partnership, joint venture or other business association or entity,
excluding (i) securities in any publicly traded company held for investment by
Promus and comprising less than five percent (5%) of the outstanding stock of
such company and (ii) any investment or series of related investments with a
book value of less than $15 million.

        Section 4.2.  Promus Capital Structure.

          (a) The authorized capital stock of Promus consists of 360,000,000
shares of Common Stock, $.10 par value, 150,000 shares of Preferred Stock,
$100.00 par value ("Promus Preferred Stock") and 5,000,000 shares of Special
Stock, par value $1.12-1/2 ("Promus Special Stock"). As of the date hereof, (i)
49,896,911 shares of Promus Common Stock were issued and outstanding, all of
which are validly issued, fully paid and nonassessable, and (ii) 1,580,101
additional shares of Promus Common Stock were held in the treasury of Promus or
by Subsidiaries of Promus. The Promus Disclosure Schedule shows the number of
shares of Promus Common Stock reserved for future issuance pursuant to stock
options granted and outstanding as of the date hereof and the plans under which
such options were granted (collectively, the "Promus Stock Plans"). As of the
date of this Agreement, none of the shares of Promus Preferred Stock or Promus
Special Stock are issued and outstanding. There are no obligations, contingent
or otherwise, of Promus or any of its Subsidiaries to repurchase, redeem or
otherwise acquire any shares of Promus Common Stock or the capital stock of any
Subsidiary or to provide funds to or make any material investment (in the form
of a loan, capital contribution or otherwise) in any such Subsidiary or any
other entity other than guarantees of bank obligations or indebtedness for
borrowed money of Subsidiaries entered into in the ordinary course of business
and other than any 


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obligation the failure of which to perform or satisfy would not have a Promus
Material Adverse Effect. All of the outstanding shares of capital stock or other
ownership interests of each of Promus's Subsidiaries are duly authorized,
validly issued, fully paid and nonassessable and all such shares (other than
directors' qualifying shares in the case of foreign Subsidiaries) are owned by
Promus or another Subsidiary of Promus free and clear of all security interests,
liens, claims, pledges, agreements, limitations in Promus's voting rights,
charges or other encumbrances of any nature.

          (b) Except as set forth in this Section 4.2 or as reserved for future
grants of options under the Promus Stock Plans or the Doubletree Stock Option
Agreement, and except for the preferred stock purchase rights issued and
issuable under the Rights Agreement dated as of June 30, 1995 between Promus and
Continental Stock Transfer & Trust Company (the "Promus Rights Plan"), (i) there
are no shares of capital stock of any class of Promus, or any security
exchangeable into or exercisable for such equity securities, issued, reserved
for issuance or outstanding; (ii) there are no options, warrants, equity
securities, calls, rights, commitments or agreements of any character to which
Promus or any of its Subsidiaries is a party or by which it is bound obligating
Promus or any of its Subsidiaries to issue, deliver or sell, or cause to be
issued, delivered or sold, additional shares of capital stock or other ownership
interests of Promus or any of its Subsidiaries or obligating Promus or any of
its Subsidiaries to grant, extend, accelerate the vesting of or enter into any
such option, warrant, equity security, call, right, commitment or agreement; and
(iii) to the best knowledge of Promus, there are no voting trusts, proxies or
other voting agreements or understandings with respect to the shares of capital
stock of Promus. All shares of Promus Common Stock subject to issuance as
specified in this Section 4.2 are duly authorized and, upon issuance on the
terms and conditions specified in the instruments pursuant to which they are
issuable, shall be validly issued, fully paid and nonassessable.

        Section 4.3.  Authority; No Conflict; Required Filings and Consents.

          (a) Promus has all requisite corporate power and authority to enter
into this Agreement, the Stock Option Agreements and the Stockholder Support
Agreement and to consummate the transactions contemplated by this Agreement, the
Stock Option Agreements and the Stockholder Support Agreement. The execution and
delivery of this Agreement, the Stock Option Agreements and the Stockholder
Support Agreement and the consummation of the transactions contemplated by this
Agreement, the Stock Option Agreements and the Stockholder Support Agreement by
Promus have been duly authorized by all necessary corporate action on the part
of Promus, subject only to the approval and adoption of this Agreement and the
Promus Merger by Promus's stockholders under the DGCL. This Agreement, the Stock
Option Agreements and the Stockholder Support Agreement have been duly executed
and delivered by Promus and constitute the valid and binding obligations of
Promus, enforceable in accordance with their terms, subject to the Bankruptcy
and Equity Exception.

          (b) The execution and delivery of this Agreement, the Stock Option
Agreements and the Stockholder Support Agreement by Promus does not, and the
consummation of the transactions contemplated by this Agreement, the Stock
Option Agreements and the Stockholder Support Agreement will not, (i) conflict
with, or result in any violation or breach of, any provision of the Certificate
of Incorporation or Bylaws of Promus or any of its Subsidiaries, (ii) result in
any violation or breach of, or constitute (with or without notice or lapse of
time, or both) a default (or 


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give rise to a right of termination, cancellation or acceleration of any
obligation or loss of any material benefit) under, or require a consent or
waiver under, any of the terms, conditions or provisions of any note, bond,
mortgage, indenture, lease, contract or other agreement, instrument or
obligation to which Promus or any of its Subsidiaries is a party or by which any
of them or any of their properties or assets may be bound (other than pursuant
to the Tranche A Credit Agreement or the Tranche B Credit Agreement, each dated
as of June 7, 1995, as amended, by and among Promus and certain of its
subsidiaries and NationsBank, N.A. (Carolinas)) or (iii) conflict with or
violate any permit, concession, franchise, license, judgment, order, decree,
statute, law, ordinance, rule or regulation applicable to Promus or any of its
Subsidiaries or any of its or their properties or assets, except in the case of
(ii) and (iii) for any such conflicts, violations, defaults, terminations,
cancellations or accelerations which (x) are not, individually or in the
aggregate, reasonably likely to have a Promus Material Adverse Effect or (y)
would not substantially impair or delay the consummation of the Promus Merger.

          (c) No consent, approval, order or authorization of, or registration,
declaration or filing with, any Governmental Entity is required by or with
respect to Promus or any of its Subsidiaries in connection with the execution
and delivery of this Agreement, the Stock Option Agreements and the Stockholder
Support Agreement or the consummation of the transactions contemplated hereby or
thereby, except for (i) the filing of the pre-merger notification report under
the HSR Act, (ii) the filing of a Certificate of Merger with respect to the
Promus Merger with the Delaware Secretary of State, (iii) the filing of the
Joint Proxy Statement/Prospectus with the SEC in accordance with the Exchange
Act and the Securities Act, (iv) such consents, approvals, orders,
authorizations, permits, filings, or registrations related to, or arising out
of, compliance with statutes, rules or regulations regulating the consumption,
sale or serving of alcoholic beverages, (v) such consents, approvals, orders,
authorizations, registrations, declarations and filings as may be required under
applicable state securities laws and the laws of any foreign country and (vi)
such other consents, authorizations, filings, approvals and registrations which,
if not obtained or made, would not (x) be reasonably likely to have a Promus
Material Adverse Effect or (y) substantially impair or delay the consummation of
the Promus Merger.

        Section 4.4.  SEC Filings; Financial Statements.

          (a) Promus has filed and made available to Doubletree all forms,
reports and documents required to be filed by Promus with the SEC since January
1, 1996 (collectively, the "Promus SEC Reports"). The Promus SEC Reports (i) at
the time filed, complied in all material respects with the applicable
requirements of the Securities Act and the Exchange Act, as the case may be, and
(ii) did not at the time they were filed (or if amended or superseded by a
filing prior to the date of this Agreement, then on the date of such filing)
contain any untrue statement of a material fact or omit to state a material fact
required to be stated in such Promus SEC Reports or necessary in order to make
the statements in such Promus SEC Reports, in the light of the circumstances
under which they were make, not misleading. Other than Promus Hotels, Inc., none
of Promus's Subsidiaries is required to file any forms, reports or other
documents with the SEC.

          (b) Each of the consolidated financial statements (including, in each
case, any related notes) of Promus contained in the Promus SEC Reports complied
as to form in all material 


                                       21


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respects with the applicable published rules and regulations of the SEC with
respect thereto, was prepared in accordance with generally accepted accounting
principles applied on a consistent basis throughout the periods involved (except
as may be indicated in the notes to such financial statements or, in the case of
unaudited statements, as permitted by Form 10-Q under the Exchange Act) and
fairly presented the consolidated financial position of Promus and its
Subsidiaries as of the dates and the consolidated results of its operations and
cash flows for the periods indicated, except that the unaudited interim
financial statements were or are subject to normal and recurring year-end
adjustments which were not or are not expected to be material in amount. The
audited balance sheet of Promus as of December 31, 1996 is referred to herein as
the "Promus Balance Sheet."

        Section 4.5. No Undisclosed Liabilities Except as disclosed in the
Promus SEC Reports filed prior to the date hereof, and except for normal or
recurring liabilities incurred since December 31, 1996 in the ordinary course of
business consistent with past practices, Promus and its Subsidiaries do not have
any liabilities, either accrued, contingent or otherwise (whether or not
required to be reflected in financial statements in accordance with generally
accepted accounting principles), and whether due or to become due, which
individually or in the aggregate, are reasonably likely to have a Promus
Material Adverse Effect.

        Section 4.6. Absence of Certain Changes or Events Except as disclosed in
the Promus SEC Reports filed prior to the date hereof, since the date of the
Promus Balance Sheet, Promus and its Subsidiaries have conducted their
businesses only in the ordinary course and in a manner consistent with past
practice and, since such date, there has not been (i) any event, development,
state of affairs or condition, or series or combination of events, developments,
states of affairs or conditions, which, individually or in the aggregate, has
had or which is reasonably likely to have a Promus Material Adverse Effect
(other than events, developments, states of affairs or conditions that are the
effect or result of actions taken by Doubletree or economic factors affecting
the economy as a whole or the industry in which Promus competes); (ii) any
damage, destruction or loss (whether or not covered by insurance) with respect
to Promus or any of its Subsidiaries which is reasonably likely to have a Promus
Material Adverse Effect; (iii) any material change by Promus in its accounting
methods, principles or practices to which Doubletree has not previously
consented in writing; (iv) any revaluation by Promus of any of its assets which
is reasonably likely to have a Promus Material Adverse Effect; or (v) any other
action or event that would have required the consent of Doubletree pursuant to
Section 5.1 of this Agreement had such action or event occurred after the date
of this Agreement, other than such actions or events that, individually or in
the aggregate, have not had or are not reasonably likely to have a Promus
Material Adverse Effect.

        Section 4.7.  Taxes.

          (a) Promus and each of its Subsidiaries have (i) filed all federal,
state, local and foreign Tax returns and reports required to be filed by them
prior to the date of this Agreement (taking into account all applicable
extensions), (ii) paid or accrued all Taxes due and payable, and (iii) paid or
accrued all Taxes for which a notice of assessment or collection has been
received (other than amounts being contested in good faith by appropriate
proceedings), except in the case of clauses (i), (ii) or (iii) for any such
filings, payments or accruals that are not reasonably likely, individually or in
the aggregate, to have a Promus Material Adverse Effect. Neither the IRS nor 


                                       22


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any other taxing authority has asserted any claim for Taxes, or to the actual
knowledge of the executive officers of Promus, is threatening to assert any
claims for Taxes, which claims, individually or in the aggregate, are reasonably
likely to have a Promus Material Adverse Effect. Promus and each of its
Subsidiaries have withheld or collected and paid over to the appropriate
governmental authorities (or are properly holding for such payment) all Taxes
required by law to be withheld or collected, except for amounts that are not
reasonably likely, individually or in the aggregate, to have a Promus Material
Adverse Effect. Neither Promus nor any of its Subsidiaries has made an election
under Section 341(f) of the Code, except for any such election that shall not
have a Promus Material Adverse Effect. There are no liens for Taxes upon the
assets of Promus or any of its Subsidiaries (other than liens for Taxes that are
not yet due or delinquent or that are being contested in good faith by
appropriate proceedings), except for liens that are not reasonably likely,
individually or in the aggregate, to have a Promus Material Adverse Effect.

          (b) Neither Promus nor any of its Subsidiaries is or has been a member
of an affiliated group of corporations filing a consolidated federal income tax
return (or a group of corporations filing a consolidated, combined or unitary
income tax return under comparable provisions of state, local or foreign tax
law) for any taxable period beginning on or after February 7, 1990, other than a
group the common parent of which is or was The Promus Companies Incorporated,
Promus or any Subsidiary of Promus.

          (c) Neither Promus nor any of its Subsidiaries has any obligation
under any agreement or arrangement with any other person with respect to Taxes
of such other person (including pursuant to Treas. Reg. Section 1.1502-6 or
comparable provisions of state, local or foreign tax law) and including any
liability for Taxes of any predecessor entity, except for obligations that are
not reasonably likely, individually or in the aggregate, to have an Promus
Material Adverse Effect.

        Section 4.8.  Properties.

          (a) Neither Promus nor any of its Subsidiaries is in default under any
Material Leases, except where the existence of such defaults, individually or in
the aggregate, is not reasonably likely to have a Promus Material Adverse
Effect.

          (b) With respect to each item of real property that Promus or any of
its Subsidiaries owns, except for such matters that, individually or in the
aggregate, are not reasonably likely to have a Promus Material Adverse Effect:
(i) Promus or its Subsidiary has good and clear record and marketable title to
such property, insurable by a recognized national title insurance company at
standard rates, free and clear of any security interest, easement, covenant or
other restriction, except for recorded easements, covenants and other
restrictions which do not materially impair the current uses or occupancy of
such property; and (ii) the improvements constructed on such property are in
good condition, and all mechanical and utility systems servicing such
improvements are in good condition, free in each case of material defects.

        Section 4.9. Intellectual Property Promus owns, or is licensed or
otherwise possesses legally enforceable rights to use, all trademarks, trade
names, service marks, copyrights, and any applications for such trademarks,
trade names, service marks and copyrights, know-how, computer software programs
or applications, and tangible or intangible proprietary information or 


                                       23


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material that are necessary to conduct the business of Promus as currently
conducted, subject to such exceptions that, individually and in the aggregate,
would not be reasonably likely to have a Promus Material Adverse Effect. Promus
has no knowledge of any assertion or claim challenging the validity of any of
such intellectual property.

        Section 4.10. Agreements, Contracts and Commitments.

          (a) Promus has not breached, or received in writing any claim or
notice that it has breached, any of the terms or conditions of any material
agreement, contract or commitment filed as an exhibit to the Promus SEC Reports
("Promus Material Contracts") in such a manner as, individually or in the
aggregate, are reasonably likely to have a Promus Material Adverse Effect. Each
Promus Material Contract that has not expired by its terms is in full force and
effect.

          (b) Without limiting Section 4.10(a), each of the management contracts
and franchise agreements to which Promus is a party and each of Promus's
Material Leases (i) is valid and binding in accordance with its terms and is in
full force and effect, (ii) neither Promus nor any of its Subsidiaries is in
default in any material respect thereof, nor does any condition exist that with
notice or lapses of time or both would constitute a material default thereunder,
and (iii) no party has given any written or (to the knowledge of Promus) oral
notice of termination or cancellation thereof or that such party intends to
assert a breach thereof, or seek to terminate or cancel, any such agreement,
contract or lease, in each case as a result of the transactions contemplated
hereby, subject to such exceptions that, individually and in the aggregate,
would not be reasonably likely to have a Promus Material Adverse Effect.

        Section 4.11. Litigation Except as described in the Promus SEC Reports
filed prior to the date hereof, there is no action, suit or proceeding, claim,
arbitration or investigation against Promus pending or as to which Promus has
received any written notice of assertion, which, individually or in the
aggregate, is reasonably likely to have a Promus Material Adverse Effect or a
material adverse effect on the ability of Promus to consummate the transactions
contemplated by this Agreement.

        Section 4.12. Environmental Matters To the knowledge of Promus and
except as disclosed in the Promus SEC Reports filed prior to the date hereof and
except for such matters that, individually or in the aggregate, are not
reasonably likely to have a Promus Material Adverse Effect: (i) Promus and its
Subsidiaries have complied with all applicable Environmental Laws; (ii) the
properties currently owned or operated by Promus and its Subsidiaries (including
soils, groundwater, surface water, buildings or other structures) are not
contaminated with any Hazardous Substances; (iii) the properties formerly owned
or operated by Promus or any of its Subsidiaries were not contaminated with
Hazardous Substances during the period of ownership or operation by Promus or
any of its Subsidiaries; (iv) neither Promus nor its Subsidiaries are subject to
liability for any Hazardous Substance disposal or contamination on any third
party property; (v) neither Promus nor any of its Subsidiaries has been
associated with any release or threat of release of any Hazardous Substance;
(vi) neither Promus nor any of its Subsidiaries has received any notice, demand,
letter, claim or request for information alleging that Promus or any of its
Subsidiaries may be in violation of or liable under any Environmental Law; (vii)
neither Promus nor any of its Subsidiaries is subject to any orders, decrees,
injunctions or other arrangements with any Governmental Entity or is subject to
any indemnity or other agreement with any third 


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party relating to liability under any Environmental Law or relating to Hazardous
Substances; and (viii) there are no circumstances or conditions involving Promus
or any of its Subsidiaries that could reasonably be expected to result in any
claims, liability, investigations, costs or restrictions on the ownership, use
or transfer of any property of Promus or any of its Subsidiaries pursuant to any
Environmental Law.

        Section 4.13. Employee Benefit Plans.

          (a) For purposes of this Agreement, the "Promus Employee Plans" shall
mean all employee benefit plans (as defined in Section 3(3) of ERISA) and all
bonus, stock option, stock purchase, incentive, deferred compensation,
supplemental retirement, severance and other similar employee benefit plans, and
all unexpired severance agreements, written or otherwise, for the benefit of, or
relating to, any current or former employee of Promus or any ERISA Affiliate of
Promus, or any Subsidiary of Promus (together, the "Promus Employee Plans").
Promus has listed in Section 4.13 of the Promus Disclosure Schedule all Promus
Employee Plans other than plans that are "employee welfare benefit plans" within
the meaning of Section 3(1) of ERISA.

          (b) With respect to each Promus Employee Plan, Promus has made
available to Doubletree, a true and correct copy of (i) the most recent annual
report (Form 5500) filed with the IRS, (ii) such Promus Employee Plan and all
amendments thereto, (iii) each trust agreement and group annuity contract, if
any, and all amendments thereto relating to such Promus Employee Plan and (iv)
the most recent actuarial report or valuation relating to a Promus Employee Plan
subject to Title IV of ERISA.

          (c) With respect to the Promus Employee Plans, individually and in the
aggregate, no event has occurred, and to the knowledge of Promus, there exists
no condition or set of circumstances in connection with which Promus could be
subject to any liability that is reasonably likely to have a Promus Material
Adverse Effect under ERISA, the Code or any other applicable law.

          (d) With respect to the Promus Employee Plans, individually and in the
aggregate, there are no funded benefit obligations for which contributions have
not been made or properly accrued and there are no unfunded benefit obligations
which have not been accounted for by reserves, or otherwise properly footnoted
in accordance with generally accepted accounting principles, on the financial
statements of Promus, except for obligations which, individually or in the
aggregate, are not reasonably likely to have a Promus Material Adverse Effect.

          (e) Except as disclosed in the Promus SEC Reports filed prior to the
date of this Agreement, and except as provided for in this Agreement, neither
Promus nor any of its Subsidiaries is a party to any oral or written (i)
agreement with any officer or other key employee of Promus or any of its
Subsidiaries, the benefits of which are contingent, or the terms of which are
materially altered, upon the occurrence of a transaction involving Promus of the
nature contemplated by this Agreement, (ii) agreement with any officer of Promus
providing any term of employment or compensation guarantee extending for a
period longer than one year from the date hereof or for the payment of
compensation in excess of $100,000 per annum, or (iii) agreement or plan,
including any stock option plan, stock appreciation right plan, restricted stock
plan or stock purchase plan, any of the benefits of which will be increased, the
vesting of the benefits of which 


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will be accelerated or the funding of benefits of which will be required, by the
occurrence of any of the transactions contemplated by this Agreement or the
value of any of the benefits of which will be calculated on the basis of any of
the transactions contemplated by this Agreement.

        Section 4.14. Compliance With Laws Promus has complied with, is not in
violation of, and has not received any notices of violation with respect to, any
federal, state or local statute, law or regulation with respect to the conduct
of its business, or the ownership or operation of its business, except for
failures to comply or violations which, individually or in the aggregate, have
not had and are not reasonably likely to have a Promus Material Adverse Effect.

        Section 4.15. Accounting and Tax Matters.

          (a) To the best knowledge of Promus, after consulting with its
independent auditors with respect to clause (i) below and its tax advisors with
respect to clause (ii) below, neither Promus nor any of its Affiliates (as
defined in Section 5.12) has taken or agreed to take any action which would (i)
prevent Parent from accounting for the business combination to be effected by
the Mergers as a pooling of interests, or (ii) prevent the Promus Merger from
qualifying as a reorganization described in Section 368(a) of the Code and/or,
taken together with the Doubletree Merger, as a transfer of property to Parent
by holders of Promus Common Stock described in Section 351 of the Code. Except
as contemplated by the Promus Option Agreement, neither Promus nor any of its
Subsidiaries owns any shares of Doubletree Common Stock or other securities
convertible into shares of Doubletree Common Stock (exclusive of any shares
owned by Promus's employee benefit plans).

          (b) To the best knowledge of Promus, the stockholders of Promus as a
group have no present plan, intention or arrangement to sell or otherwise
dispose of such number of the shares of Parent Common Stock received in the
Promus Merger as would reduce their ownership in Parent Common Stock to a number
of shares having a value, as of the date of the Promus Merger, of less than
eighty percent (80%) of the value of all the formerly outstanding stock of
Promus as of the same date.

        Section 4.16. Registration Statement; Joint Proxy Statement/Prospectus
The information to be supplied by Promus for inclusion in the Registration
Statement shall not at the time the Registration Statement is declared effective
by the SEC contain any untrue statement of a material fact or omit to state any
material fact required to be stated in the Registration Statement or necessary
in order to make the statements in the Registration Statement, in light of the
circumstances under which they were made, not misleading. The information to be
supplied by Promus for inclusion in the Joint Proxy Statement/Prospectus shall
not, on the date the Joint Proxy Statement/Prospectus is first mailed to
stockholders of Promus or Doubletree, at the time of the Promus Stockholders'
Meeting and the Doubletree Stockholder's Meeting and at the Effective Time,
contain any statement which, at such time and in light of the circumstances
under which it shall be made, is false or misleading with respect to any
material fact, omit to state any material fact necessary in order to make the
statements made in the Joint Proxy Statement/Prospectus not false or misleading,
or omit to state any material fact necessary to correct any statement in any
earlier communication with respect to the solicitation of proxies for the Promus
Stockholders' Meeting or the Doubletree Stockholders' Meeting which has become
false or misleading. If at any time prior to the Effective Time any event
relating to Promus or any 


                                       26


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of its Affiliates, officers or directors should be discovered by Promus which
should be set forth in an amendment to the Registration Statement or a
supplement to the Joint Proxy Statement/Prospectus, Promus shall promptly inform
Doubletree.

        Section 4.17. Labor Matters Except as disclosed in the Promus SEC
Reports filed prior to the date hereof, neither Promus nor any of its
Subsidiaries is a party to or otherwise bound by any collective bargaining
agreement, contract or other agreement or understanding with a labor union or
labor organization, nor, as of the date hereof, is Promus or any of its
Subsidiaries the subject of any material proceeding asserting that Promus or any
of its Subsidiaries has committed an unfair labor practice or is seeking to
compel it to bargain with any labor union or labor organization nor, as of the
date of this Agreement, is there pending or, to the knowledge of the executive
officers of Promus, threatened, any material labor strike, dispute, walkout,
work stoppage, slow-down or lockout involving Promus or any of its Subsidiaries.

        Section 4.18. Insurance All material fire and casualty, general
liability, business interruption, product liability, and sprinkler and water
damage insurance policies maintained by Promus or any of its Subsidiaries are
with reputable insurance carriers, provide full and adequate coverage for all
normal risks incident to the business of Promus and its Subsidiaries and their
respective properties and assets, and are in character and amount at least
equivalent to that carried by persons engaged in similar businesses and subject
to the same or similar perils or hazards, except for any such failures to
maintain insurance policies that, individually or in the aggregate, are not
reasonably likely to have a Promus Material Adverse Effect.

        Section 4.19. Promus Long-Range Plans Promus has provided to Doubletree
copies of Promus's long-range plans that are substantially identical to the
long-range plans presented by Promus's management to, and adopted by, the Board
of Directors of Promus on July 23, 1997, and Promus has not adopted any other
long-range plans since such date.

        Section 4.20. Opinion of Financial Advisor The financial advisor of
Promus, BT Wolfensohn, has delivered to Promus an opinion dated the date of this
Agreement to the effect that the Promus Exchange Ratio is fair to holders of
Promus Common Stock from a financial point of view.

        Section 4.21. No Existing Discussions As of the date hereof, Promus is
not engaged, directly or indirectly, in any discussions or negotiations with any
other party with respect to an Acquisition Proposal.

        Section 4.22. Section 203 of the DGCL Not Applicable. The restrictions
contained in Section 203 of the DGCL applicable to a "business combination" (as
defined in Section DGCL 203) will not apply to the authorization, execution,
delivery or performance of this Agreement or the Stock Option Agreements by
Promus or the consummation of the Promus Merger by Promus. No other "fair
price," "moratorium," "control share acquisition" or other similar anti-takeover
statute or regulation is applicable to Promus or (by reason of Promus's
participation therein) the Promus Merger or the other transactions contemplated
by this Agreement.

        Section 4.23. Promus Rights Plan. Under the terms of the Promus Rights
Plan, neither the execution of this Agreement or the Doubletree Stock Option
Agreement, nor the transactions 


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contemplated hereby or thereby will cause a Distribution Date to occur or cause
the rights issued pursuant to the Promus Rights Plan to become exercisable, and
all such rights shall become non-exercisable at the Effective Time.


                                   ARTICLE V.

                                    COVENANTS

        Section 5.1. Conduct of Business During the period from the date of this
Agreement and continuing until the earlier of the termination of this Agreement
or the Effective Time, Doubletree and Promus each agrees as to itself and its
respective Subsidiaries (except to the extent that the other party shall
otherwise consent in writing) to carry on its business in the usual, regular and
ordinary course in substantially the same manner as previously conducted, to pay
its debts and taxes when due subject to good faith disputes over such debts or
taxes, to pay or perform its other obligations when due, and, to the extent
consistent with such business, use all reasonable efforts consistent with past
practices and policies to preserve intact its present business organization,
keep available the services of its present officers and key employees and
preserve its relationships with customers, suppliers, distributors, and others
having business dealings with it. Except as expressly contemplated by this
Agreement or the Stock Option Agreements or as set forth in Section 5.1 of the
Doubletree Disclosure Schedule, during the period from the date of this
Agreement and continuing until the earlier of the termination of this Agreement
or the Effective Time, Doubletree and Promus each shall not (and shall not
permit any of its respective Subsidiaries to), without the written consent of
the other party:

          (a) Accelerate, amend or change the period of exercisability of
options or restricted stock granted under any employee stock plan of such party
or authorize cash payments in exchange for any options granted under any of such
plans except as required by the terms of such plans or any related agreements
(including severance agreements) in effect as of the date of this Agreement;

          (b) Declare or pay any dividends on or make any other distributions
(whether in cash, stock or property) in respect of any of its capital stock, or
split, combine or reclassify any of its capital stock or issue or authorize the
issuance of any other securities in respect of, in lieu of or in substitution
for shares of its capital stock, or purchase or otherwise acquire, directly or
indirectly, any shares of its capital stock except from former employees,
directors and consultants in accordance with agreements providing for the
repurchase of shares in connection with any termination of service to such
party;

          (c) Issue, deliver or sell, or authorize or propose the issuance,
delivery or sale of, any shares of its capital stock or securities convertible
into shares of its capital stock, or subscriptions, rights, warrants or options
to acquire, or other agreements or commitments of any character obligating it to
issue any such shares or other convertible securities, other than (i) the grant
of options consistent with past practices to employees or directors, which
options represent in the aggregate the right to acquire no more than 25,000
shares (net of cancellations) of Doubletree Common Stock or Promus Common Stock,
as the case may be, (ii) the issuance of shares of Doubletree Common Stock or
Promus Common Stock, as the case may be, pursuant to 


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the exercise of options or warrants outstanding on the date of this Agreement,
and (iii) the issuance of capital stock under the Doubletree Rights Plan or the
Promus Rights Plan if required by the respective terms thereof;

          (d) Acquire or agree to acquire by merging or consolidating with, or
by purchasing a substantial equity interest in or substantial portion of the
assets of, or by any other manner, any business or any corporation, partnership
or other business organization or division, or otherwise acquire or agree to
acquire any assets (other than hotel properties, inventory and other immaterial
assets, in each case in the ordinary course of business);

          (e) Sell, lease, license or otherwise dispose of any of its material
properties or assets, except for transactions (including sales, leases, licenses
or dispositions of hotel properties, inventory and other immaterial assets) in
the ordinary course of business;

          (f) (i) Increase or agree to increase the compensation payable or to
become payable to its officers or employees, except for increases in salary or
wages of employees (other than officers) in accordance with past practices, (ii)
grant any additional severance or termination pay to, or enter into any
employment or severance agreements with, any employees or officers, (iii) enter
into any collective bargaining agreement (other than as required by law or
extensions to existing agreements in the ordinary course of business), (iv)
establish, adopt, enter into or amend any bonus, profit sharing, thrift,
compensation, stock option, restricted stock, pension, retirement, deferred
compensation, employment, termination, severance or other plan, trust, fund,
policy or arrangement for the benefit of any directors, officers or employees;

          (g) Amend or propose to amend its Certificate of Incorporation or 
Bylaws except as contemplated by this Agreement;

          (h) Incur any indebtedness for borrowed money other than in the
ordinary course of business;

          (i) Take any action that would or is reasonably likely to result in a
material breach of any provision of this Agreement or the Stock Option
Agreements or in any of its representations and warranties set forth in this
Agreement or the Stock Option Agreements being untrue on and as of the Closing
Date;

          (j) Make or rescind any material express or deemed election relating
to Taxes, settle or compromise any material claim, action, suit, litigation,
proceeding, arbitration, investigation, audit or controversy relating to Taxes,
or make any material change to any of its methods of reporting income or
deductions for federal income tax purposes from those employed in the
preparation of its federal income tax return for the taxable year ending
December 31, 1996, except as may be required by applicable law;

          (k) Settle any litigation relating to the transactions contemplated
hereby other than any settlement which would not (i) have a Doubletree Material
Adverse Effect (if settled by 


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Doubletree), a Promus Material Adverse Effect (if settled by Promus) or a
material adverse effect on the business, properties, financial condition or
results of operations of Parent (if settled by either Doubletree or Promus) or
(ii) adversely effect the consummation of the transactions contemplated hereby;
or

          (l) Take, or agree in writing or otherwise to take, any of the actions
described in Sections (a) through (k) above.

          Section 5.2. Cooperation; Notice; Cure Subject to compliance with
applicable law, from the date hereof until the Effective Time, each of
Doubletree and Promus shall confer on a regular and frequent basis with one or
more representatives of the other party to report on the general status of
ongoing operations and shall promptly provide the other party or its counsel
with copies of all filings made by such party with any Governmental Entity in
connection with this Agreement, the Mergers and the transactions contemplated
hereby and thereby. Each of Doubletree and Promus shall promptly notify the
other in writing of, and will use all commercially reasonable efforts to cure
before the Closing Date, any event, transaction or circumstance, as soon as
practical after it becomes known to such party, that causes or will cause any
covenant or agreement of Doubletree or Promus under this Agreement to be
breached or that renders or will render untrue any representation or warranty of
Doubletree or Promus contained in this Agreement. No notice given pursuant to
this paragraph shall have any effect on the representations, warranties,
covenants or agreements contained in this Agreement for purposes of determining
satisfaction of any condition contained herein.

        Section 5.3.  No Solicitation.

          (a) Doubletree and Promus each shall not, directly or indirectly,
through any officer, director, employee, financial advisor, representative or
agent of such party (i) solicit, initiate, or encourage any inquiries or
proposals that constitute, or could reasonably be expected to lead to, a
proposal or offer for a merger, consolidation, business combination, sale of
substantial assets, sale of shares of capital stock (including without
limitation by way of a tender offer) or similar transaction involving such party
or any of its Subsidiaries, other than the transactions contemplated by this
Agreement (any of the foregoing inquiries or proposals being referred to in this
Agreement as an "Acquisition Proposal"), (ii) engage in negotiations or
discussions with any person (or group of persons) other than Doubletree or
Promus or their respective affiliates (a "Third Party") concerning, or provide
any non-public information to any person or entity relating to, any Acquisition
Proposal, or (iii) agree to or recommend any Acquisition Proposal; provided,
however, that nothing contained in this Agreement shall prevent Doubletree or
Promus, or their respective Board of Directors, from (A) furnishing non-public
information to, or entering into discussions or negotiations with, any person or
entity in connection with an unsolicited bona fide written Acquisition Proposal
by such person or entity or modifying or withdrawing its recommendation with
respect to the transactions contemplated hereby or recommending an unsolicited
bona fide written Acquisition Proposal to the stockholders of such party, if and
only to the extent that (1) the Board of Directors of such party believes in
good faith (after consultation with its financial advisor) that such Acquisition
Proposal is reasonably capable of being completed on the terms proposed and,
after taking into account the strategic benefits anticipated to be derived from
the Mergers and the prospects of Doubletree and Promus as a combined company,
would, if consummated, result in a transaction more favorable to the
stockholders of such party over the long term than the transaction contemplated
by this Agreement (a "Superior Proposal") and the Board of Directors of such
party determines in good 


                                       30


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faith after consultation with outside legal counsel that such action is required
for such Board of Directors to comply with its fiduciary duties to stockholders
under applicable law and (2) prior to furnishing such non-public information to,
or entering into discussions or negotiations with, such person or entity, such
Board of Directors receives from such person or entity an executed
confidentiality and standstill agreement with terms no less favorable to such
party than those contained in the Confidentiality Agreements, each dated August
16, 1997 between Promus and Doubletree (the "Confidentiality Agreements"); or
(B) complying with Rule 14e-2 promulgated under the Exchange Act with regard to
an Acquisition Proposal. Each of Doubletree and Promus agrees not to release any
third party from, or waive any provision of, any standstill agreement to which
it is a party or any confidentiality agreement between it and another person who
has made, or who may reasonably be considered likely to make, an Acquisition
Proposal, unless its Board of Directors determines in good faith after
consultation with outside legal counsel that such action is required for such
Board of Directors to comply with its fiduciary duties to stockholders under
applicable law.

          (b) Doubletree and Promus shall each notify the other party
immediately after receipt by Doubletree or Promus (or any of their advisors) of
any Acquisition Proposal or any request for nonpublic information in connection
with an Acquisition Proposal or for access to the properties, books or records
of such party by any person or entity that informs such party that it is
considering making, or has made, an Acquisition Proposal. Such notice shall be
made orally and in writing and shall indicate in reasonable detail the identity
of the offeror and the terms and conditions of such proposal, inquiry or
contact. Such party shall continue to keep the other party hereto informed, on a
current basis, of the status of any such discussions or negotiations and the
terms being discussed or negotiated.

        Section 5.4.  Joint Proxy Statement/Prospectus; Registration Statement.

          (a) As promptly as practical after the execution of this Agreement,
Doubletree and Promus shall prepare and file with the SEC the Joint Proxy
Statement/Prospectus and the Registration Statement in which the Joint Proxy
Statement/Prospectus will be included as a prospectus, provided that Doubletree
and Promus may delay the filing of the Registration Statement until approval of
the Joint Proxy Statement/Prospectus by the SEC. Doubletree and Promus shall use
all reasonable efforts to cause the Registration Statement to become effective
as soon after such filing as practical. The Joint Proxy Statement/Prospectus
shall include the recommendation of the Board of Directors of Doubletree in
favor of adoption of this Agreement and the Doubletree Merger and the
recommendation of the Board of Directors of Promus in favor of adoption of this
Agreement and the Promus Merger; provided that the Board of Directors of either
party may modify or withdraw such recommendation if such Board of Directors
believes in good faith after consultation with outside legal counsel that the
modification or withdrawal of such recommendation is required for such Board of
Directors to comply with its fiduciary duties under applicable law.

          (b) Doubletree and Promus shall make all necessary filings with
respect to the Merger under the Securities Act, the Exchange Act, applicable
state blue sky laws and the rules and regulations thereunder.


                                       31


   39


          Section 5.5. NASDAQ Quotation and NYSE Listing Each of Doubletree and
Promus agrees to continue the quotation and listing of Doubletree Common Stock
and Promus Common Stock, respectively, on NASDAQ National Market and the NYSE,
respectively, during the term of this Agreement.

          Section 5.6. Access to Information Upon reasonable notice, Doubletree
and Promus shall each (and shall cause each of their respective Subsidiaries to)
afford to the officers, employees, accountants, counsel and other
representatives of the other, access, during normal business hours during the
period prior to the Effective Time, to all its personnel, properties, books,
contracts, commitments and records and, during such period, each of Doubletree
and Promus shall, and shall cause each of their respective Subsidiaries to,
furnish promptly to the other (a) copies of monthly financial reports and
development reports, (b) a copy of each report, schedule, registration statement
and other document filed or received by it during such period pursuant to the
requirements of federal securities laws and (c) all other information concerning
its business, properties and personnel as such other party may reasonably
request. The parties will hold any such information which is nonpublic in
confidence in accordance with the Confidentiality Agreements. No information or
knowledge obtained in any investigation pursuant to this Section 5.6 shall
affect or be deemed to modify any representation or warranty contained in this
Agreement or the conditions to the obligations of the parties to consummate the
Merger.

          Section 5.7. Stockholders' Meetings Doubletree and Promus each shall
call a meeting of its respective stockholders to be held as promptly as
practicable for the purpose of voting, in the case of Doubletree, upon this
Agreement and the Doubletree Merger and, in the case of Promus, upon this
Agreement and the Promus Merger. Subject to Sections 5.3 and 5.4, Doubletree and
Promus shall, through their respective Boards of Directors, recommend to their
respective stockholders adoption of this Agreement and approval of such matters
and shall coordinate and cooperate with respect to the timing of such meetings
and shall use their best efforts to hold such meetings on the same day and as
soon as practicable after the date hereof. Unless otherwise required to comply
with the applicable fiduciary duties of the respective directors of Doubletree
and Promus, as determined by such directors in good faith after consultation
with outside legal counsel, each party shall use all reasonable efforts to
solicit from stockholders of such party proxies in favor of such matters.
Doubletree and Promus intend to submit additional proposals to their respective
stockholders at the Doubletree Stockholders' Meeting and the Promus
Stockholders' Meeting, respectively, separate from the proposals referred to in
the first sentence of this Section 5.7. The approval by Doubletree's
stockholders or Promus's stockholders, as the case may be, of such additional
proposals shall not be a condition to the closing of the Mergers under this
Agreement.

        Section 5.8.  Legal Conditions to Merger.

          (a) Doubletree and Promus shall each use all reasonable efforts to (i)
take, or cause to be taken, all appropriate action, and do, or cause to be done,
all things necessary and proper under applicable law to consummate and make
effective the transactions contemplated hereby as promptly as practicable, (ii)
obtain from any Governmental Entity or any other third party any consents,
licenses, permits, waivers, approvals, authorizations, or orders required to be
obtained or made by Doubletree or Promus or any of their Subsidiaries in
connection with the authorization, execution and delivery of this Agreement and
the consummation of the transactions 


                                       32


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contemplated hereby including, without limitation, the Mergers, and (iii) as
promptly as practicable, make all necessary filings, and thereafter make any
other required submissions, with respect to this Agreement and the Mergers
required under (A) the Securities Act and the Exchange Act, and any other
applicable federal or state securities laws, (B) the HSR Act and any related
governmental request thereunder, and (C) any other applicable law. Doubletree
and Promus shall cooperate with each other in connection with the making of all
such filings, including providing copies of all such documents to the non-filing
party and its advisors prior to filing and, if requested, to accept all
reasonable additions, deletions or changes suggested in connection therewith.
Doubletree and Promus shall use their reasonable efforts to furnish to each
other all information required for any application or other filing to be made
pursuant to the rules and regulations of any applicable law (including all
information required to be included in the Joint Proxy Statement/Prospectus and
the Registration Statement) in connection with the transactions contemplated by
this Agreement.

          (b) Doubletree and Promus agree, and shall cause each of their
respective Subsidiaries, to cooperate and to use their respective reasonable
efforts to obtain any government clearances required for Closing (including
through compliance with the HSR Act and any applicable foreign government
reporting requirements), to respond to any government requests for information,
and to contest and resist any action, including any legislative, administrative
or judicial action, and to have vacated, lifted, reversed or overturned any
decree, judgment, injunction or other order (whether temporary, preliminary or
permanent) (an "Order") that restricts, prevents or prohibits the consummation
of the Mergers or any other transactions contemplated by this Agreement. The
parties hereto will consult and cooperate with one another, and consider in good
faith the views of one another, in connection with any analyses, appearances,
presentations, memoranda, briefs, arguments, opinions and proposals made or
submitted by or on behalf of any party hereto in connection with proceedings
under or relating to the HSR Act or any other federal, state or foreign
antitrust or fair trade law. Doubletree and Promus shall cooperate and work
together in any proceedings or negotiations with any Governmental Entity
relating to any of the foregoing. Notwithstanding anything to the contrary in
this Section 5.8, neither Doubletree nor Promus, nor any of their respective
Subsidiaries, shall be required to take any action that would reasonably be
expected to substantially impair the overall benefits expected, as of the date
hereof, to be realized from the consummation of the Mergers.

          (c) Each of Doubletree and Promus shall give (or shall cause their
respective Subsidiaries to give) any notices to third parties, and use, and
cause their respective Subsidiaries to use, all reasonable efforts to obtain any
third party consents related to or required in connection with the Mergers.

          Section 5.9. Public Disclosure Doubletree and Promus shall agree on
the form and content of the initial press release regarding the transactions
contemplated hereby and thereafter shall consult with each other before issuing,
and use all reasonable efforts to agree upon, any press release or other public
statement with respect to any of the transactions contemplated hereby and shall
not issue any such press release or make any such public statement prior to such
consultation, except as may be required by law.

          Section 5.10. Nonrecognition Exchange From and after the date hereof
and until the Effective Time, neither Doubletree nor Promus, nor any of their
respective Subsidiaries or other 


                                       33


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Affiliates shall knowingly take any action, or knowingly fail to take any
action, that is reasonably likely to jeopardize the treatment of either of the
Mergers as a reorganization described in Section 368(a) of the Code and/or,
taken together with the other of the Mergers, as a transfer of property to
Parent by holders of Doubletree Common Stock or Promus Common Stock, as
applicable, described in Section 351 of the Code.

          Section 5.11. Pooling Accounting From and after the date hereof and
until the Effective Time, neither Doubletree nor Promus, nor any of their
respective Subsidiaries or other Affiliates shall knowingly take any action, or
knowingly fail to take any action, that is reasonably likely to jeopardize the
treatment of the Mergers as a pooling of interests for accounting purposes.

          Section 5.12. Affiliate Agreements Upon the execution of this
Agreement, Doubletree and Promus will provide each other with a list of those
persons who are, in Doubletree's or Promus's respective reasonable judgment,
"affiliates" of Doubletree or Promus, respectively, within the meaning of Rule
145 (each such person who is an "affiliate" of Doubletree or Promus within the
meaning of Rule 145 is referred to as an "Affiliate") promulgated under the
Securities Act ("Rule 145"). Doubletree and Promus shall provide each other such
information and documents as the other party shall reasonably request for
purposes of reviewing such list and shall notify the other party in writing
regarding any change in the identity of its Affiliates prior to the Closing
Date. Doubletree and Promus shall each use all reasonable efforts to deliver or
cause to be delivered to each other by October 15, 1997 (and in any case prior
to the Effective Time) from each of its Affiliates, an executed Affiliate
Agreement, in substantially the form of Exhibit F (with respect to affiliates of
Doubletree) or Exhibit G (with respect to affiliates of Promus) attached hereto
(each, an "Affiliate Agreement," and together, the "Affiliate Agreements").

          Section 5.13. NYSE Listing Doubletree and Promus shall cause Parent to
promptly prepare and submit to the NYSE a listing application covering the
shares of Parent Common Stock to be issued in the Mergers and upon exercise of
Doubletree Stock Options, the GEPT Warrant and Promus Stock Options, and shall
use all reasonable efforts to cause such shares to be approved for listing on
the NYSE, prior to the Effective Time, subject to official notice of issuance.

        Section 5.14. Stock Plans.

          (a) At the Effective Time, each outstanding option to purchase shares
of Doubletree Common Stock (an "Doubletree Stock Option") under the Doubletree
Stock Plans and each outstanding option to purchase shares of Promus Common
Stock (a "Promus Stock Option") under the Promus Stock Plans, in each case
whether vested or unvested, shall be deemed to constitute an option to acquire,
on the same terms and conditions as were applicable under such Doubletree Stock
Option or Promus Stock Option, as the case may be, the same number of shares of
Parent Common Stock as the holder of such Doubletree Stock Option or Promus
Stock Option, as the case may be, would have been entitled to receive pursuant
to the Doubletree Merger or the Promus Merger, respectively, had such holder
exercised such option in full immediately prior to the Effective Time (rounded
downward to the nearest whole number), at a price per share (rounded downward to
the nearest whole cent) equal to (y) the aggregate exercise price for the shares
of Doubletree Common Stock or Promus Common Stock, as the case may be,
purchasable pursuant to such Doubletree Stock Option or such Promus Stock Option
immediately 


                                       34


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prior to the Effective Time divided by (z) the number of full shares of Parent
Common Stock deemed purchasable pursuant to such Doubletree Stock Option or
Promus Stock Option, as the case may be, in accordance with the foregoing.

          (b) As soon as practicable after the Effective Time, Parent shall
deliver to the participants in the Doubletree Stock Plans and the Promus Stock
Plans appropriate notice setting forth such participants' rights pursuant
thereto and the grants pursuant to Doubletree Stock Plans or Promus Stock Plans,
as the case may be, shall continue in effect on the same terms and conditions
(subject to the adjustments required by this Section 5.14 after giving effect to
the Mergers).

          (c) Parent shall take all corporate action necessary to reserve for
issuance a sufficient number of shares of Parent Common Stock for delivery under
Doubletree Stock Plans and Promus Stock Plans assumed in accordance with this
Section 5.14. As soon as practicable after the Effective Time, Parent shall file
a registration statement on Form S-8 (or any successor or other appropriate
forms), or another appropriate form with respect to the shares of Parent Common
Stock subject to such options and shall use its reasonable efforts to maintain
the effectiveness of such registration statement or registration statements (and
maintain the current status of the prospectus or prospectuses contained therein)
for so long as such options remain outstanding.

          (d) The Board of Directors of each of Doubletree and Promus shall,
prior to or as of the Effective Time, take all necessary actions, pursuant to
and in accordance with the terms of the Doubletree Stock Plans and the
instruments evidencing the Doubletree Stock Options, or the Promus Stock Plans
and the instruments evidencing the Promus Stock Options, as the case may be, to
provide for the conversion of the Doubletree Stock Options and the Promus Stock
Options into options to acquire Parent Common Stock in accordance with this
Section 5.14 without obtaining consent of the holders of the Doubletree Stock
Options or Promus Stock Options in connection with such conversion; provided,
however, that Promus shall use all reasonable efforts to obtain from each holder
of Promus Stock Options a waiver of any right of such holder to receive any cash
payment which may become due with respect to any Promus Stock Options that are
exercisable immediately prior to the Effective Time as a result of the
consummation of the transactions contemplated hereby.

          (e) The Board of Directors of each of Doubletree and Promus shall,
prior to or as of the Effective Time, take appropriate action to approve the
deemed cancellation of the Doubletree Stock Options or Promus Stock Options, as
the case may be, for purposes of Section 16(b) of the Exchange Act. The Board of
Directors of Parent shall, prior to or as of the Effective Time, take
appropriate action to approve the deemed grant of options to purchase Parent
Common Stock under the Doubletree Stock Options and the Promus Stock Options (as
converted pursuant to this Section 5.14) for purposes of Section 16(b) of the
Exchange Act.

          Section 5.15. Brokers or Finders Each of Doubletree and Promus
represents, as to itself, its Subsidiaries and its Affiliates, that no agent,
broker, investment banker, financial advisor or other firm or person is or will
be entitled to any broker's or finder's fee or any other commission or similar
fee in connection with any of the transactions contemplated by this Agreement
except Morgan Stanley & Co. Incorporated, whose fees and expenses will be paid
by 


                                       35
   43


Doubletree in accordance with Doubletree's agreement with such firm (a copy of
which has been delivered by Doubletree to Promus prior to the date of this
Agreement), and BT Wolfensohn, whose fees and expenses will be paid by Promus in
accordance with Promus's agreement with such firm (a copy of which has been
delivered by Promus prior to the date of this Agreement). Each of Promus and
Doubletree agrees to indemnify and hold the other harmless from and against any
and all claims, liabilities or obligations with respect to any such fees,
commissions or expenses asserted by any person on the basis of any act or
statement alleged to have been made by such party or any of its Affiliates.

        Section 5.16. Indemnification.

          (a) From and after the Effective Time, Parent agrees that it will, and
will cause the Surviving Corporations to, indemnify and hold harmless each
present and former director and officer of Doubletree and Promus (the
"Indemnified Parties"), against any costs or expenses (including attorneys'
fees), judgments, fines, losses, claims, damages, liabilities or amounts paid in
settlement incurred in connection with any claim, action, suit, proceeding or
investigation, whether civil, criminal, administrative or investigative, arising
out of or pertaining to matters existing or occurring at or prior to the
Effective Time, whether asserted or claimed prior to, at or after the Effective
Time, to the fullest extent that Doubletree or Promus, as the case may be, would
have been permitted under Delaware law and its certificate of incorporation or
bylaws in effect on the date hereof to indemnify such Indemnified Party (and
Parent and the Surviving Corporation shall also advance expenses as incurred to
the fullest extent permitted under applicable law, provided the Indemnified
Party to whom expenses are advanced provides an undertaking to repay such
advances if it is ultimately determined that such Indemnified Party is not
entitled to indemnification).

          (b) For a period of six years after the Effective Time, Parent shall
maintain or shall cause the Surviving Corporations to maintain (to the extent
available in the market) in effect a directors' and officers' liability
insurance policy covering those persons who are currently covered by
Doubletree's or Promus's directors' and officers' liability insurance policy
(copies of which have been heretofore delivered by Doubletree and Promus to each
other) with coverage in amount and scope at least as favorable as Doubletree's
or Promus's existing coverage; provided that in no event shall Parent or the
Surviving Corporations be required to expend in the aggregate in excess of 200%
of the annual premium currently paid by Doubletree and Promus for such coverage;
and if such premium would at any time exceed 200% of the such amount, then the
Parent or the Surviving Corporations shall maintain insurance policies which
provide the maximum and best coverage available at an annual premium equal to
200% of such amount.

          (c) The provisions of this Section 5.16 are intended to be an addition
to the rights otherwise available to the current officers and directors of
Doubletree and Promus by law, charter, statute, bylaw or agreement, and shall
operate for the benefit of, and shall be enforceable by, each of the Indemnified
Parties, their heirs and their representatives.

          Section 5.17. Letter of Promus's Accountants Promus shall use all
reasonable efforts to cause to be delivered to Doubletree and Promus a letter of
Arthur Andersen LLP, Promus's independent auditors, dated a date within two
business days before the date on which the Registration Statement shall become
effective and addressed to Doubletree, in form reasonably 


                                       36


   44


satisfactory to Doubletree and customary in scope and substance for letters
delivered by independent public accountants in connection with registration
statements similar to the Registration Statement.

          Section 5.18. Letter of Doubletree's Accountants Doubletree shall use
all reasonable efforts to cause to be delivered to Promus and Doubletree a
letter of KPMG Peat Marwick LLP, Doubletree's independent auditors, dated a date
within two business days before the date on which the Registration Statement
shall become effective and addressed to Promus, in form reasonably satisfactory
to Promus and customary in scope and substance for letters delivered by
independent public accountants in connection with registration statements
similar to the Registration Statement.

          Section 5.19. Stock Option Agreements Promus and Doubletree each agree
to fully perform their respective obligations under the Stock Option Agreements.

          Section 5.20. Post-Merger Corporate Governance; Employment
Arrangements.

          (a) At the Effective Time, the total number of persons serving on the
Board of Directors of Parent shall be fourteen (unless otherwise agreed in
writing by Doubletree and Promus prior to the Effective Time), half of whom
shall be Doubletree Directors and half of whom shall be Promus Directors (as
such terms are defined below), all of which Doubletree Directors and Promus
Directors shall be spread as evenly as possible among Parent's three classes of
Directors. The persons to serve initially on the Board of Directors of Parent at
the Effective Time who are Doubletree Directors shall be selected solely by and
at the absolute discretion of the Board of Directors of Doubletree prior to the
Effective Time; and the persons to serve initially on the Board of Directors of
Parent at the Effective Time who are Promus Directors shall be selected solely
by and at the absolute discretion of the Board of Directors of Promus prior to
the Effective Time. In the event that, prior to the Effective Time, any person
so selected to serve on the Board of Directors of Parent after the Effective
Time is unable or unwilling to serve in such position, the Board of Directors
which selected such person shall designate another of its members to serve in
such person's stead in accordance with the provisions of the immediately
preceding sentence. From and after the Effective Time and until December 31,
2002, (a) the Board of Directors of Parent and each Committee of the Board of
Directors of Parent as constituted following each election of Directors shall
consist of an equal number of Doubletree Directors and Promus Directors, and (b)
the size of the Board of Directors of Parent and each Committee of the Board of
Directors of Parent shall not be increased unless such increase is approved by
75% of the members thereof. It is the intention of the parties hereto that Mr.
Dale Frey shall be designated as the initial Chairman of the Human Resources
Committee of Parent immediately following the Effective Time. If, at any time
during the period referenced in the second preceding sentence, the number of
Doubletree Directors and Promus Directors serving, or that would be serving
following the next stockholders' meeting at which Directors are to be elected,
as Directors of Parent or as members of any Committee of the Board of Directors
of Parent, would not be equal, then, subject to the fiduciary duties of the
Directors of Parent, the Board of Directors and the Nominating Committee thereof
shall nominate for election at the next stockholders' meeting at which Directors
are to be elected, such person or persons as may be requested by the remaining
Doubletree Directors (if the number of 


                                       37


   45
Doubletree Directors is, or would otherwise become, less than the number of
Promus Directors) or by the remaining Promus Directors (if the number of Promus
Directors is, or would otherwise become, less than the number of Doubletree
Directors) to ensure that there shall be an equal number of Doubletree Directors
and Promus Directors. The provisions of the preceding sentence shall not apply
in respect of any stockholders' meeting which takes place after December 31,
2002. The term "Doubletree Director" means (i) any person serving as a Director
of Doubletree or any of its Subsidiaries on the date hereof who becomes a
Director of Parent at the Effective Time and (ii) any person who becomes a
Director of Parent pursuant to the second preceding sentence and who is
designated by the Doubletree Directors; and the term "Promus Director" means (i)
any person serving as a Director of Promus or any of its Subsidiaries on the
date hereof who becomes a Director of Parent at the Effective Time and (ii) any
person who becomes a Director of Parent pursuant to the second preceding
sentence and who is designated by the Promus Directors.

          (b) At the Effective Time, pursuant to the terms of the employment
contracts referred to in Section 5.20(c) hereof, (i) Raymond E. Schultz, the
current Chief Executive Officer of Promus, shall hold the position of Chief
Executive Officer and Chairman of the Board of Parent, (ii) Richard M. Kelleher,
the current President and Chief Executive Officer of Doubletree, shall hold the
position of President and Chief Operating Officer of Parent, (iii) William L.
Perocchi, the current Executive Vice President and Chief Financial Officer of
Doubletree, shall hold the position of Executive Vice President and Chief
Financial Officer of Parent and (iv) Thomas L. Keltner, the current Executive
Vice President, Development of Promus, shall hold the position of Executive Vice
President, Development of Parent. Mr. Schultz will continue as Chairman of the
Board and Chief Executive Officer of Parent until his retirement no later than
December 31, 1999, and, pursuant to the terms of the employment contracts
referred to in Section 5.20(c) hereof and subject to the Bylaws of Parent, Mr.
Kelleher will succeed Mr. Schultz as Chairman of the Board and Chief Executive
Officer of Parent. If any of the persons identified above in this Section
5.20(b) is unable or unwilling to hold such offices as set forth above, his
successor shall be selected by the Board of Directors of Parent in accordance
with the Bylaws of Parent. The authority, duties and responsibilities of the
Chairman and Chief Executive Officer, the President and Chief Operating Officer,
the Executive Vice President and Chief Financial Officer and the Executive Vice
President, Development shall be set forth in the employment contracts entered
into pursuant to Section 5.20(c) hereof, which employment contracts shall also
set forth in their entirety the rights and remedies of Messrs. Schultz,
Kelleher, Perocchi and Keltner with respect to employment by Parent , and none
of them shall have any right, remedy or cause of action under this Section 5.20,
nor shall they be third party beneficiaries of this Section 5.20.

          (c) Prior to the Closing, Parent shall offer to enter into employment
agreements with Raymond E. Schultz, Richard M. Kelleher, William L. Perocchi and
Thomas L. Keltner on substantially the terms previously agreed to by Doubletree
and Promus.

          (d) At the Effective Time, Parent shall have an Executive Committee
which initially will be comprised of the following four members of the Board of
Directors of Parent: Richard J. Ferris, Michael D. Rose, Raymond E. Schultz and
Peter V. Ueberroth. In addition, Richard M. Kelleher shall be an ex-officio
member of the Executive Committee with the right to attend but not vote at all
meetings of the Executive Committee. The Executive Committee shall have
responsibility for developing Parent's long-term strategic plans, making
significant capital 


                                       38

   46


allocation decisions and such other duties and responsibilities as specified by
the Board of Directors of Parent at or after the Effective Time. The Executive
Committee also shall be required to oversee the implementation of Promus's
existing 100% guest satisfaction guarantee program at all of Promus's and
Doubletree's hotel properties following the Effective Time. Each member of the
Executive Committee that is not an employee of Parent will be entitled to
receive $300,000 per year as compensation for serving on the Executive
Committee.

          (e) Each of Doubletree and Promus shall cause Parent to incorporate
the provisions contained in this Section 5.20 into the Bylaws of Parent in
effect at the Effective Time, which provisions shall thereafter be amended only
with the approval of 75% of the members of the Board of Directors of Parent.

          Section 5.21. Name of Parent At the Effective Time, Parent shall
change its corporate name to Promus Hotel Corporation.

          Section 5.22. Parent Stockholder Rights Plan Prior to the Effective
Time, Doubletree and Promus shall cause Parent to adopt a Stockholder Rights
Plan (the "Parent Rights Plan") that is substantially similar to the Promus
Rights Plan, with such modifications as are acceptable to both Doubletree and
Promus.

        Section 5.23. GEPT Warrant; Doubletree Registration Rights Agreement

          (a) At the Effective Time, Parent shall assume all obligations under
the GEPT Warrant, and the holder of the GEPT Warrant thereafter shall have the
right to acquire, on the same pricing and payment terms and conditions as are
currently applicable under the GEPT Warrant, the same number of shares of Parent
Common Stock as the holder of the GEPT Warrant would have been entitled to
receive pursuant to the Doubletree Merger had such holder exercised the GEPT
Warrant in full immediately prior to the Effective Time (rounded downward to the
nearest whole number), at the price per share (rounded downward to the nearest
whole cent) equal to (y) the aggregate exercise price for the shares of
Doubletree Common Stock purchasable pursuant to the GEPT Warrant immediately
prior to the Effective Time divided by (z) the number of full shares of Parent
Common Stock deemed purchasable pursuant to the GEPT Warrant in accordance with
the foregoing.

          (b) At the Effective Time, Doubletree and Promus shall cause Parent to
enter into a Registration Rights Agreement (the "Parent Registration Rights
Agreement") substantially similar to the Incorporation and Registration Rights
Agreement dated as of December 16, 1993, as amended on June 30, 1994, February
27, 1996 and November 8, 1996 by and among Doubletree and certain stockholders
of Doubletree (the "Doubletree Registration Rights Agreement") pursuant to which
Parent will provide registration rights to parties to the Doubletree
Registration Rights Agreement (other than Doubletree) with respect to all shares
of Parent Common Stock issued in the Doubletree Merger on account of the shares
of Doubletree Common Stock covered by the Doubletree Registration Rights
Agreement.

          Section 5.24. Conveyance Taxes Doubletree and Promus shall cooperate
in the preparation, execution and filing of all returns, questionnaires,
applications or other documents regarding any real property transfer or gains,
sales, use, transfer, value added, stock transfer and 


                                       39
   47


stamp taxes, any transfer, recording, registration and other fees or any similar
taxes which become payable in connection with the transactions contemplated by
this Agreement that are required or permitted to be filed on or before the
Effective Time.

          Section 5.25. Transfer Taxes Doubletree shall pay, and Promus shall
pay, on behalf of the stockholders of Doubletree and Promus, respectively, any
New York State Real Estate Transfer Tax, New York City Real Property Transfer
Tax, New York State Stock Transfer Tax and any similar taxes imposed on the
stockholders of Doubletree and Promus, respectively, by any other State of the
United States (and any interest with respect to such taxes) (the "Transfer
Taxes"), which become payable in connection with the transactions contemplated
by this Agreement. Doubletree and Promus shall cooperate in the preparation,
execution and filing of any required returns with respect to such Transfer Taxes
(including returns on behalf of the stockholders of Doubletree and Promus) and
in the determination of the portion of the consideration allocable to the real
property of Doubletree and the Doubletree Subsidiaries and Promus and the Promus
Subsidiaries in New York State and City (or in any other jurisdiction, if
applicable). The Joint Proxy Statement/Prospectus shall provide that the
stockholders of Doubletree and Promus shall be deemed to have (i) authorized
Doubletree and Promus, respectively, to prepare, execute and file any tax
returns relating to Transfer Taxes and pay any Transfer Taxes arising in
connection with the Mergers, in each case, on behalf of such holders and (ii)
agreed to be bound by the values and allocations established by Doubletree and
Promus in the preparation of any return with respect to the Transfer Taxes, if
applicable.

          Section 5.26. Stockholder Litigation Each of Doubletree and Promus
shall give the other the reasonable opportunity to participate in the defense of
any stockholder litigation against Doubletree or Promus, as applicable, and its
directors relating to the transactions contemplated hereby.

        Section 5.27. Employee Benefits; Severance

          (a) Parent shall cause to continue to be maintained the Doubletree and
Promus annual bonus plans for management employees for the 1997 fiscal year and
shall calculate the amounts payable to participants thereunder on a basis
consistent with the terms of each such plan and the past practice of Doubletree
or Promus, as applicable.

          (b) For purposes of determining eligibility to participate, vesting,
entitlement to benefits and in all other respects where length of service is
relevant (except for pension benefit accruals) under any employee benefit plan
or arrangement covering employees of Doubletree and its Subsidiaries
("Doubletree Employees") employees of Promus and its Subsidiaries ("Promus
Employees") following the Effective Time, Parent shall cause such plans or
arrangements to recognize service credit for service with Doubletree or Promus
(as applicable) and any of their respective Subsidiaries to the same extent such
service was recognized under the applicable employee benefit plans immediately
prior to the Effective Time.

          (c) At the Effective Time, Parent shall assume and honor in accordance
with their terms the severance agreements and severance pay policies identified
in Section 5.27 of the Doubletree Disclosure Schedule and Section 5.27 of the
Promus Disclosure Schedule.


                                       40


   48


          (d) Promus and Doubletree agree that each may enter into retention and
transition bonus arrangements with its employees prior to the Effective Time,
with the terms and amounts of such payments to be determined jointly by the
Chief Executive Officers of Promus and Doubletree; provided, however, that in no
event shall the aggregate of all such payments exceed approximately $2.5
million.

          (e) Promus agrees to use all reasonable efforts, including obtaining
any necessary employee consents, to prevent the automatic funding of any escrow,
trust or similar arrangement pursuant to any employment agreement, arrangement
or benefit plan that arises in connection with the execution of this Agreement
or the consummation of any of the transactions contemplated hereby.


                                   ARTICLE VI.

                              CONDITIONS TO MERGER

          Section 6.1. Conditions to Each Party's Obligation to Effect the
Mergers The respective obligations of each party to this Agreement to effect the
Mergers shall be subject to the satisfaction or waiver by each party prior to
the Effective Time of the following conditions:

          (a) Stockholder Approval. This Agreement, the Doubletree Merger and
the Promus Merger shall have been approved in the manner required under the DGCL
by the respective holders of the issued and outstanding shares of capital stock
of Doubletree and Promus.

          (b) HSR Act. The waiting period applicable to the consummation of the
Mergers under the HSR Act shall have expired or been terminated.

          (c) Approvals. Other than the filing provided for by Section 1.4, all
authorizations, consents, orders or approvals of, or declarations or filings
with, or expirations of waiting periods imposed by, any Governmental Entity the
failure of which to file, obtain or occur is reasonably likely to have a
Doubletree Material Adverse Effect or a Promus Material Adverse Effect shall
have been filed, been obtained or occurred.

          (d) Registration Statement. The Registration Statement shall have
become effective under the Securities Act and shall not be the subject of any
stop order or proceedings seeking a stop order.

          (e) No Injunctions. No Governmental Entity shall have enacted, issued,
promulgated, enforced or entered any order, executive order, stay, decree,
judgment or injunction or statute, rule, regulation which is in effect and which
has the effect of making the Mergers illegal or otherwise prohibiting
consummation of the Mergers.

          (f) Pooling Letters. Doubletree and Promus shall have received letters
from KPMG Peat Marwick LLP and Arthur Andersen LLP, respectively, addressed to
Doubletree and Promus, respectively, regarding their concurrence with the
respective conclusions of management of Doubletree and Promus, as to the
appropriateness of the pooling of interests accounting, under 


                                       41


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Accounting Principles Board Opinion No. 16 for the transactions contemplated
hereby, it being agreed that Doubletree and Promus shall each provide reasonable
cooperation to KPMG Peat Marwick LLP and Arthur Andersen LLP to enable them to
issue such letters.

          (g) NYSE Listing. The shares of Parent Common Stock to be issued in
the Merger and upon exercise of Doubletree Options, the GEPT Warrant and Promus
Options shall have been approved for listing on the NYSE, subject to official
notice of issuance.

          (h) Corporate Governance. Doubletree and Promus shall have taken all
actions necessary so that (i) not later than the Effective Time, the Certificate
of Incorporation and Bylaws of Parent shall have been amended to be
substantially in the form of Exhibit D and Exhibit E hereto; (ii) at the
Effective Time, the composition of the Board of Directors of Parent and of each
Committee of the Board of Directors of Parent shall comply with Section 5.20
hereof (assuming Doubletree has designated the Doubletree Directors and Promus
has designated the Promus Directors, in each case as contemplated by Section
5.20(a) hereof); and (iii) not later than the Effective Time, Parent shall have
adopted the Parent Rights Plan.

          Section 6.2. Additional Conditions to Obligations of Doubletree The
obligation of Doubletree to effect the Doubletree Merger is subject to the
satisfaction of each of the following conditions prior to the Effective Time,
any of which may be waived in writing exclusively by Doubletree:

          (a) Representations and Warranties. The representations and warranties
of Promus set forth in this Agreement shall be true and correct as of the date
of this Agreement and (except to the extent such representations speak as of an
earlier date) as of the Closing Date as though made on and as of the Closing
Date, except for, (i) changes contemplated by this Agreement and (ii)
inaccuracies which, individually or in the aggregate, have not had and are not
reasonably likely to have a Promus Material Adverse Effect or a material adverse
effect upon the consummation of the transactions contemplated hereby; and
Doubletree shall have received a certificate signed on behalf of Promus by the
chief executive officer and the chief financial officer of Promus to such
effect.

          (b) Performance of Obligations of Promus. Promus shall have performed
in all material respects all obligations required to be performed by it under
this Agreement at or prior to the Closing Date, and Doubletree shall have
received a certificate signed on behalf of Promus by the chief executive officer
and the chief financial officer of Promus to such effect.

          (c) Tax Opinion. Doubletree shall have received the opinion of Dewey
Ballantine, counsel to Doubletree, based upon reasonably requested
representation letters and dated the Closing Date, to the effect that the
Doubletree Merger will be treated as a reorganization described in Section
368(a) of the Code and/or, taken together with the Promus Merger, as a transfer
of property to Parent by holders of Doubletree Common Stock described in Section
351 of the Code.

          (d) No Trigger of Promus Rights Plan. No event shall have occurred
that has or would result in the triggering of any right or entitlement of
stockholders of Promus under the Promus Rights Plan, or will occur as a result
of the consummation of the Mergers.


                                       42


   50


          Section 6.3. Additional Conditions to Obligations of Promus The
obligations of Promus to effect the Promus Merger are subject to the
satisfaction of each of the following conditions prior to the Effective Time,
any of which may be waived in writing exclusively by Promus:

          (a) Representations and Warranties. The representations and warranties
of Doubletree set forth in this Agreement shall be true and correct as of the
date of this Agreement and (except to the extent such representations and
warranties speak as of an earlier date) as of the Closing Date as though made on
and as of the Closing Date, except for, (i) changes contemplated by this
Agreement and (ii) inaccuracies which, individually or in the aggregate, have
not had and are not reasonably likely to have a Doubletree Material Adverse
Effect, or a material adverse effect upon the consummation of the transactions
contemplated hereby; and Promus shall have received a certificate signed on
behalf of Doubletree by the chief executive officer and the chief financial
officer of Doubletree to such effect.

          (b) Performance of Obligations of Doubletree. Doubletree shall have
performed in all material respects all obligations required to be performed by
it under this Agreement at or prior to the Closing Date; and Promus shall have
received a certificate signed on behalf of Doubletree by the chief executive
officer and the chief financial officer of Doubletree to such effect.

          (c) Tax Opinion. Promus shall have received the opinion of Latham &
Watkins, counsel to Promus, based upon reasonably requested representation
letters and dated the Closing Date, to the effect that the Promus Merger will be
treated as a reorganization described in Section 368(a) of the Code and/or,
taken together with the Doubletree Merger, as a transfer of property to Parent
by holders of Promus Common Stock described in Section 351 of the Code.

          (d) No Trigger of Doubletree Rights Plan. No event shall have occurred
that has or would result in the triggering of any right or entitlement of
stockholders of Doubletree under the Doubletree Rights Plan, or will occur as a
result of the consummation of the Mergers.


                                  ARTICLE VII.

                            TERMINATION AND AMENDMENT

          Section 7.1. Termination This Agreement may be terminated at any time
prior to the Effective Time (with respect to Sections 7.1(b) through 7.1(h), by
written notice by the terminating party to the other party), whether before or
after approval of the matters presented in connection with the Mergers by the
stockholders of Doubletree or Promus:

          (a) by mutual written consent of Doubletree and Promus; or

          (b) by either Doubletree or Promus if the Mergers shall not have been
consummated by January 31, 1998 (provided that (i) either Doubletree or Promus
may extend such date to March 31, 1998 by providing written notice thereof to
the other party on or prior to January 31, 1998 (January 31, 1998, as it may be
so extended, shall be referred to herein as the "Outside Date") and (ii) the
right to terminate this Agreement under this Section 7.1(b) shall not 


                                       43


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be available to any party whose failure to fulfill any obligation under this
Agreement has been the cause of or resulted in the failure of the Mergers to
occur on or before such date); or

          (c) by either Doubletree or Promus if a court of competent
jurisdiction or other Governmental Entity shall have issued a nonappealable
final order, decree or ruling or taken any other nonappealable final action, in
each case having the effect of permanently restraining, enjoining or otherwise
prohibiting the Mergers; or

          (d) (i) by Doubletree or Promus, if, at the Promus Stockholders'
Meeting (including any adjournment or postponement), the requisite vote of the
stockholders of Promus in favor of the approval and adoption of this Agreement
and the Promus Merger shall not have been obtained; or (ii) by Promus or
Doubletree if, at the Doubletree Stockholders' Meeting (including any
adjournment or postponement), the requisite vote of the stockholders of
Doubletree in favor of the approval and adoption of this Agreement and the
Doubletree Merger shall not have been obtained; or

          (e) by Doubletree, if (i) the Board of Directors of Promus shall have
withdrawn or modified its recommendation of this Agreement or the Promus Merger
(provided that Doubletree's right to terminate this Agreement under such clause
(i) shall not be available if at such time Promus would be entitled to terminate
this Agreement under Section 7.1(h) without giving effect to the cure period);
(ii) after the receipt by Promus of an Acquisition Proposal, Doubletree requests
in writing that the Board of Directors of Promus reconfirm its recommendation of
this Agreement and the Promus Merger to the stockholders of Promus and the Board
of Directors of Promus fails to do so within 10 business days after its receipt
of Doubletree's request; (iii) the Board of Directors of Promus shall have
recommended to the stockholders of Promus an Alternative Transaction (as defined
in Section 7.3(e)); (iv) a tender offer or exchange offer for 20% or more of the
outstanding shares of Promus Common Stock is commenced (other than by Doubletree
or an Affiliate of Doubletree) and the Board of Directors of Promus recommends
that the stockholders of Promus tender their shares in such tender or exchange
offer; or (v) for any reason Promus fails to call and hold the Promus
Stockholders' Meeting by the Outside Date (provided that Doubletree's right to
terminate this Agreement under such clause (v) shall not be available if at such
time Promus would be entitled to terminate this Agreement under Section 7.1(h)
without giving effect to the cure period); or

          (f) by Promus, if (i) the Board of Directors of Doubletree shall have
withdrawn or modified its recommendation of this Agreement or the Doubletree
Merger (provided that Promus's right to terminate this Agreement under such
clause (i) shall not be available if at such time Doubletree would be entitled
to terminate this Agreement under Section 7.1(h) without giving effect to the
cure period); (ii) after the receipt by Doubletree of an Acquisition Proposal,
Promus requests in writing that the Board of Directors of Doubletree reconfirm
its recommendation of this Agreement and the Doubletree Merger to the
stockholders of Promus and the Board of Directors of Doubletree fails to do so
within 10 business days after its receipt of Promus's request; (iii) the Board
of Directors of Doubletree shall have recommended to the stockholders of
Doubletree an Alternative Transaction (as defined in Section 7.3(e)); (iv) a
tender offer or exchange offer for 20% or more of the outstanding shares of
Doubletree Common Stock is commenced (other than by Promus or an Affiliate of
Promus) and the Board of Directors of Doubletree recommends that the
stockholders of Doubletree tender their shares in such tender or 


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exchange offer; or (v) for any reason Doubletree fails to call and hold the
Doubletree Stockholders' Meeting by the Outside Date (provided that Promus's
right to terminate this Agreement under such clause (v) shall not be available
if at such time Doubletree would be entitled to terminate this Agreement under
Section 7.1(h) without giving effect to the cure period); or

          (g) by Doubletree or Promus, prior to the approval of this Agreement
by the stockholders of such party, if, as a result of a Superior Proposal
received by such party from a Third Party, the Board of Directors of such party
determines in good faith after consultation with outside legal counsel that
accepting such Superior Proposal is required for such Board of Directors to
comply with its fiduciary duties to stockholders under applicable law; provided,
however, that no termination shall be effective pursuant to this Section 7.1(g)
under circumstances in which a termination fee is payable by the terminating
party pursuant to Section 7.3(b)(iii) or (c)(iii), unless concurrently with such
termination, such termination fee is paid in full by the terminating party in
accordance with Section 7.3(b)(iii) or (c)(iii), as applicable; or

          (h) by Doubletree or Promus, if (A) there has been a breach of any
representation, warranty, covenant or agreement on the part of the other party
set forth in this Agreement, which breach (i) will cause the conditions set
forth in Section 6.2(a) or (b) (in the case of termination by Doubletree) or
6.3(a) or (b) (in the case of termination by Promus) not to be satisfied, and
(ii) shall not have been cured within 20 business days following receipt by the
breaching party of written notice of such breach from the other party; or (B)
any event shall have occurred which makes it impossible for the conditions set
forth in Article VI hereof (other than Section 6.1(a), 6.1(e), 6.2(d) and
6.3(d)) to be satisfied, provided that any termination pursuant to this clause
(B) shall not be effective until 20 business days after notice thereof is
delivered by the party seeking to terminate to the other party, and shall be
automatically rescinded if (1) such condition is solely for the benefit of the
party receiving such notice and (2) such party, prior to such 20th business day,
irrevocably waives satisfaction of such condition based on such event.

          Section 7.2. Effect of Termination In the event of termination of this
Agreement as provided in Section 7.1, this Agreement shall immediately become
void and there shall be no liability or obligation on the part of Doubletree,
Promus, Parent or their respective officers, directors, stockholders or
Affiliates, except as set forth in Sections 5.15 and 7.3 and except that such
termination shall not limit liability for a willful breach of this Agreement;
provided that, the provisions of Sections 5.15 and 7.3 of this Agreement, the
Stock Option Agreements and the Confidentiality Agreements shall remain in full
force and effect and survive any termination of this Agreement.

        Section 7.3.  Fees and Expenses.

          (a) Except as set forth in this Section 7.3, all fees and expenses
incurred in connection with this Agreement and the transactions contemplated
hereby shall be paid by the party incurring such expenses, whether or not the
Mergers are consummated.

          (b) Doubletree shall pay Promus a termination fee of $45 million upon
the earliest to occur of the following events:


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                    (i) the termination of this Agreement by either Promus or
Doubletree pursuant to Section 7.1(d)(ii), if a proposal for an Alternative
Transaction (as defined below) involving Doubletree shall have been publicly
announced prior to the Doubletree Stockholders' Meeting and either a definitive
agreement for an Alternative Transaction is entered into, or an Alternative
Transaction is consummated, within eighteen months of such termination;

                    (ii) the termination of this Agreement by Promus pursuant to

Section 7.1(f); or

                    (iii) the termination of this Agreement by Doubletree
pursuant to 

Section 7.1(g).

          Doubletree's payment of a termination fee pursuant to this subsection
shall be the sole and exclusive remedy of Promus against Doubletree and any of
its Subsidiaries and their respective directors, officers, employees, agents,
advisors or other representatives with respect to the occurrences giving rise to
such payment; provided that this limitation shall not apply in the event of a
willful breach of this Agreement by Doubletree. Notwithstanding the foregoing,
if and to the extent that Promus has purchased shares of Doubletree Common Stock
pursuant to the Promus Stock Option Agreement prior to the payment of the $45
million fee provided for herein (the "Fee Payment Date"), the amount payable to
Promus under this Section 7.3(b), together with (i)(x) the net cash amount
received by Promus prior to the Fee Payment Date pursuant to Doubletree's
repurchase of Shares (as defined in the Promus Stock Option Agreement) pursuant
to Section 7 of the Promus Stock Option Agreement, less (y) Promus's purchase
price for such Shares, and (ii)(x) the amounts received by Promus prior to the
Fee Payment Date pursuant to the sale of Shares (or any other securities into
which such Shares are converted or exchanged), less (y) Promus's purchase price
for such Shares, shall not exceed $65 million.

          (c) Promus shall pay Doubletree a termination fee of $45 million upon
the earliest to occur of the following events:

                    (i) the termination of this Agreement by either Doubletree
or Promus pursuant to Section 7.1(d)(i), if a proposal for an Alternative
Transaction (as defined below) involving Promus shall have been publicly
announced prior to the Promus Stockholders' Meeting and either an Alternative
Transaction is entered into, or an Alternative Transaction is consummated,
within eighteen months of such termination;

                    (ii) the termination of this Agreement by Doubletree
pursuant to

Section 7.1(e); or

                    (iii) the termination of this Agreement by Promus pursuant
to

Section 7.1 (g).

               Promus's payment of a termination fee pursuant to this subsection
shall be the sole and exclusive remedy of Doubletree against Promus and any of
its Subsidiaries and their respective directors, officers, employees, agents,
advisors or other representatives with respect to the occurrences giving rise to
such payment; provided that this limitation shall not apply in the event of a
willful breach of this Agreement by Promus. Notwithstanding the foregoing, if
and to 


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the extent that Doubletree has purchased shares of Promus Common Stock
pursuant to the Doubletree Stock Option Agreement prior to the Fee Payment Date,
the amount payable to Doubletree under this Section 7.3(c), together with (i)(x)
the net cash amount received by Doubletree prior to the Fee Payment Date
pursuant to Promus's repurchase of Shares (as defined in the Doubletree Stock
Option Agreement) pursuant to Section 7 of the Doubletree Stock Option
Agreement, less (y) Doubletree's purchase price for such Shares, and (ii)(x) the
amounts received by Doubletree prior to the Fee Payment Date pursuant to the
sale of Shares (or any other securities into which such Shares are converted or
exchanged), less (y) Doubletree's purchase price for such Shares, shall not
exceed $65 million.

          (d) The fees payable pursuant to Section 7.3(b) or 7.3(c) shall be
paid concurrently with the first to occur of the events described in Section
7.3(b)(i), (ii) or (iii) or 7.3(c)(i), (ii) or (iii), respectively.

          (e) As used in this Agreement, "Alternative Transaction" means either
(i) a transaction pursuant to which any Third Party acquires more than 20% of
the outstanding shares of Doubletree Common Stock or Promus Common Stock, as the
case may be, pursuant to a tender offer or exchange offer or otherwise, (ii) a
merger or other business combination involving Doubletree or Promus pursuant to
which any Third Party (or the stockholders of a Third Party) acquires more than
20% of the outstanding shares of Doubletree Common Stock or Promus Common Stock,
as the case may be, or the entity surviving such merger or business combination,
(iii) any other transaction pursuant to which any Third Party acquires control
of assets (including for this purpose the outstanding equity securities of
Subsidiaries of Doubletree or Promus, and the entity surviving any merger or
business combination including any of them) of Doubletree or Promus having a
fair market value (as determined by the Board of Directors of Doubletree or
Promus, as the case may be, in good faith) equal to more than 20% of the fair
market value of all the assets of Doubletree or Promus, as the case may be, and
their respective Subsidiaries, taken as a whole, immediately prior to such
transaction, or (iv) any public announcement of a proposal, plan or intention to
do any of the foregoing or any agreement to engage in any of the foregoing.

          Section 7.4. Amendment This Agreemen ay be amended by the parties
hereto, by action taken or authorized by their respective Boards of Directors,
at any time before or after approval of the matters presented in connection with
the Mergers by the stockholders of Doubletree or Promus, but, after any such
approval, no amendment shall be made which by law requires further approval by
such stockholders without such further approval. This Agreement may not be
amended except by an instrument in writing signed on behalf of each of the
parties hereto; provided, however, that this Agreement may be amended in writing
without obtaining the signatures of Doubletree, Promus or Parent solely for the
purpose of adding Doubletree Sub and Merger Sub as parties to this Agreement.

          Section 7.5. Extension; Waiver At any time prior to the Effective
Time, the parties hereto, by action taken or authorized by their respective
Boards of Directors, may, to the extent legally allowed, (i) extend the time for
the performance of any of the obligations or other acts of the other parties
hereto, (ii) waive any inaccuracies in the representations and warranties
contained herein or in any document delivered pursuant hereto and (iii) waive
compliance with any of the agreements or conditions contained here. Any
agreement on the part of a party hereto 


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to any such extension or waiver shall be valid only if set forth in a written
instrument signed on behalf of such party.


                                  ARTICLE VIII.

                                  MISCELLANEOUS

          Section 8.1. Nonsurvival of Representations, Warranties and Agreements
None of the representations, warranties and agreements in this Agreement or in
any instrument delivered pursuant to this Agreement shall survive the Effective
Time, except for the agreements contained in Sections 1.6, 2.1, 2.2, 2.4, 5.16,
5.19, 5.20 and 5.27 and Article VIII, and the agreements of the Affiliates
delivered pursuant to Section 5.12. The Confidentiality Agreements shall survive
the execution and delivery of this Agreement.

          Section 8.2. Notices . All notices nd ther communications hereunder
shall be in writing and shall be deemed given if delivered personally,
telecopied (which is confirmed) or mailed by registered or certified mail
(return receipt requested) to the parties at the following addresses (or at such
other address for a party as shall be specified by like notice):

          (a)     if to Doubletree, to

                             Doubletree Corporation
                             410 North 44th Street, Suite 700
                             Phoenix, AZ 85008
                             Attn: Richard M. Kelleher
                             Telecopy: (602) 220-6753

                             with a copy to

                             Dewey Ballantine
                             1301 Avenue of the Americas
                             New York, NY 10019-6092
                             Attn:  William J. Phillips, Esq.
                             Telecopy:  (212) 295-6333

          (b)     if to Promus, to

                             Promus Hotel Corporation
                             755 Crossover Lane
                             Memphis, TN 38117
                             Attn:  Raymond E. Schultz
                             Telecopy:  (901) 374-5636


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                             with a copy to:

                             Latham & Watkins
                             633 West Fifth Street, Suite 4000
                             Los Angeles, CA 90071-2007
                             Attn: John M. Newell, Esq.
                             Telecopy: (213) 891-8763

          Section 8.3. Interpretation When a reference is made in this Agreement
to Sections, such reference shall be to a Section of this Agreement unless
otherwise indicated. The table of contents and headings contained in this
Agreement are for reference purposes only and shall not affect in any way the
meaning or interpretation of this Agreement. Whenever the words "include,"
"includes" or "including" are used in this Agreement they shall be deemed to be
followed by the words "without limitation." The phrase "made available" in this
Agreement shall mean that the information referred to has been made available if
requested by the party to whom such information is to be made available. The
phrases "the date of this Agreement", "the date hereof," and terms of similar
import, unless the context otherwise requires, shall be deemed to refer to
September 1, 1997.

          Section 8.4. Counterparts This Agreement may be executed in two or
more counterparts, all of which shall be considered one and the same agreement
and shall become effective when two or more counterparts have been signed by
each of the parties and delivered to the other parties, it being understood that
all parties need not sign the same counterpart.

          Section 8.5. Entire Agreement; No Third Party Beneficiaries This
Agreement and all documents and instruments referred to herein (a) constitute
the entire agreement and supersedes all prior agreements and understandings,
both written and oral, among the parties with respect to the subject matter
hereof, and (b) except as provided in Section 5.16 are not intended to confer
upon any person other than the parties hereto any rights or remedies hereunder;
provided that the Confidentiality Agreements shall remain in full force and
effect until the Effective Time. Each party hereto agrees that, except for the
representations and warranties contained in this Agreement, neither Doubletree
nor Promus makes any other representations or warranties, and each hereby
disclaims any other representations and warranties made by itself or any of its
officers, directors, employees, agents, financial and legal advisors or other
representatives, with respect to the execution and delivery of this Agreement or
the transactions contemplated hereby, notwithstanding the delivery or disclosure
to the other or the other's representatives of any documentation or other
information with respect to any one or more of the foregoing.

          Section 8.6. Governing Law This Agreement shall be governed and
construed in accordance with the laws of the State of Delaware without regard to
any applicable conflicts of law.

          Section 8.7. Assignment Neither this Agreement nor any of the rights,
interests or obligations hereunder shall be assigned by any of the parties
hereto (whether by operation of law or otherwise) without the prior written
consent of the other parties. Subject to the preceding sentence, this Agreement
will be binding upon, inure to the benefit of and be enforceable by the parties
and their respective successors and assigns.


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   57


                 Signature Page for Agreement and Plan of Merger


               IN WITNESS WHEREOF, Doubletree, Promus and Parent have caused
this Agreement to be signed by their respective duly authorized officers as of
the date first written above.


                                   DOUBLETREE CORPORATION




                                   /s/ Richard M. Kelleher
                             By:   Richard M. Kelleher
                             Its:  President and Chief Executive Officer



                                   PROMUS HOTEL CORPORATION




                                   /s/ Raymond E. Schultz
                             By:   Raymond E. Schultz
                             Its:  President and Chief Executive Officer




                                   PARENT HOLDING CORP.




                                   /s/ Raymond E. Schultz
                             By:   Raymond E. Schultz
                             Its:  Chief Executive Officer and
                                   Chairman of the Board