AGREEMENT AND PLAN OF MERGER

                            DATED AS OF SEPTEMBER 1, 1997

                                        AMONG

                               DOUBLETREE CORPORATION,

                               PROMUS HOTEL CORPORATION

                                         AND

                                 PARENT HOLDING CORP.





                                  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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
   Section 3.8.    Properties  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
   Section 3.9.    Intellectual Property . . . . . . . . . . . . . . . . . . . . . . . . .  14
   Section 3.10.   Agreements, Contracts and Commitments . . . . . . . . . . . . . . . . .  14
   Section 3.11.   Litigation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
   Section 3.12.   Environmental Matters . . . . . . . . . . . . . . . . . . . . . . . . .  15
   Section 3.13.   Employee Benefit Plans  . . . . . . . . . . . . . . . . . . . . . . . .  16
   Section 3.14.   Compliance With Laws  . . . . . . . . . . . . . . . . . . . . . . . . .  17
   Section 3.15.   Accounting and Tax Matters  . . . . . . . . . . . . . . . . . . . . . .  17
   Section 3.16.   Registration Statement; Joint Proxy Statement/Prospectus  . . . . . . .  17
   Section 3.17.   Labor Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
   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  . . . . . . . . . . . . . . . .  19


                                       i







                                                                                          Page
                                                                                    
   Section 3.23.   Doubletree Rights Plan  . . . . . . . . . . . . . . . . . . . . . . . .  19

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

   Section 4.1.    Organization of Promus  . . . . . . . . . . . . . . . . . . . . . . . .  19
   Section 4.2.    Promus Capital Structure  . . . . . . . . . . . . . . . . . . . . . . .  20
   Section 4.3.    Authority; No Conflict; Required Filings and Consents . . . . . . . . .  21
   Section 4.4.    SEC Filings; Financial Statements . . . . . . . . . . . . . . . . . . .  22
   Section 4.5.    No Undisclosed Liabilities  . . . . . . . . . . . . . . . . . . . . . .  22
   Section 4.6.    Absence of Certain Changes or Events  . . . . . . . . . . . . . . . . .  22
   Section 4.7.    Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
   Section 4.8.    Properties  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
   Section 4.9.    Intellectual Property . . . . . . . . . . . . . . . . . . . . . . . . .  24
   Section 4.10.   Agreements, Contracts and Commitments . . . . . . . . . . . . . . . . .  24
   Section 4.11.   Litigation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
   Section 4.12.   Environmental Matters . . . . . . . . . . . . . . . . . . . . . . . . .  25
   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  . . . . . . .  27
   Section 4.17.   Labor Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
   Section 4.18.   Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
   Section 4.19.   Promus Long-Range Plans . . . . . . . . . . . . . . . . . . . . . . . .  28
   Section 4.20.   Opinion of Financial Advisor  . . . . . . . . . . . . . . . . . . . . .  28
   Section 4.21.   No Existing Discussions . . . . . . . . . . . . . . . . . . . . . . . .  28
   Section 4.22.   Section 203 of the DGCL Not Applicable  . . . . . . . . . . . . . . . .  28
   Section 4.23.   Promus Rights Plan  . . . . . . . . . . . . . . . . . . . . . . . . . .  28

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

   Section 5.1.    Conduct of Business . . . . . . . . . . . . . . . . . . . . . . . . . .  28
   Section 5.2.    Cooperation; Notice; Cure . . . . . . . . . . . . . . . . . . . . . . .  30
   Section 5.3.    No Solicitation . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
   Section 5.4.    Joint Proxy Statement/Prospectus; Registration Statement  . . . . . . .  32
   Section 5.5.    NASDAQ Quotation and NYSE Listing . . . . . . . . . . . . . . . . . . .  32
   Section 5.6.    Access to Information . . . . . . . . . . . . . . . . . . . . . . . . .  32
   Section 5.7.    Stockholders' Meetings  . . . . . . . . . . . . . . . . . . . . . . . .  33
   Section 5.8.    Legal Conditions to Merger  . . . . . . . . . . . . . . . . . . . . . .  33
   Section 5.9.    Public Disclosure . . . . . . . . . . . . . . . . . . . . . . . . . . .  34
   Section 5.10.   Nonrecognition Exchange . . . . . . . . . . . . . . . . . . . . . . . .  34
   Section 5.11.   Pooling Accounting  . . . . . . . . . . . . . . . . . . . . . . . . . .  34
   Section 5.12.   Affiliate Agreements  . . . . . . . . . . . . . . . . . . . . . . . . .  35
   Section 5.13.   NYSE Listing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
   Section 5.14.   Stock Plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
   Section 5.15.   Brokers or Finders  . . . . . . . . . . . . . . . . . . . . . . . . . .  36
   Section 5.16.   Indemnification . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37


                                       ii






                                                                                          Page
                                                                                    
   Section 5.17.   Letter of Promus's Accountants  . . . . . . . . . . . . . . . . . . . .  37
   Section 5.18.   Letter of Doubletree's Accountants  . . . . . . . . . . . . . . . . . .  38
   Section 5.19.   Stock Option Agreements . . . . . . . . . . . . . . . . . . . . . . . .  38
   Section 5.20.   Post-Merger Corporate Governance; Employment Arrangements . . . . . . .  38
   Section 5.21.   Name of Parent  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
   Section 5.22.   Parent Stockholder Rights Plan; Amendment of Promus Rights Plan . . . .  40
   Section 5.23.   GEPT Warrant; Doubletree Registration Rights Agreement  . . . . . . . .  40
   Section 5.24.   Conveyance Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
   Section 5.25.   Transfer Taxes  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
   Section 5.26.   Stockholder Litigation  . . . . . . . . . . . . . . . . . . . . . . . .  41
   Section 5.27.   Employee Benefits; Severance  . . . . . . . . . . . . . . . . . . . . .  41

ARTICLE VI.        CONDITIONS TO MERGER  . . . . . . . . . . . . . . . . . . . . . . . . .  42

   Section 6.1.    Conditions to Each Party's Obligation to Effect the Mergers . . . . . .  42
   Section 6.2.    Additional Conditions to Obligations of Doubletree  . . . . . . . . . .  43
   Section 6.3.    Additional Conditions to Obligations of Promus  . . . . . . . . . . . .  44

ARTICLE VII.        TERMINATION AND AMENDMENT  . . . . . . . . . . . . . . . . . . . . . .  44

   Section 7.1.    Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
   Section 7.2.    Effect of Termination . . . . . . . . . . . . . . . . . . . . . . . . .  46
   Section 7.3.    Fees and Expenses . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
   Section 7.4.    Amendment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
   Section 7.5.    Extension; Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . .  49

ARTICLE VIII.      MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49

   Section 8.1.    Nonsurvival of Representations, Warranties and Agreements . . . . . . .  49
   Section 8.2.    Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
   Section 8.3.    Interpretation  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
   Section 8.4.    Counterparts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
   Section 8.5.    Entire Agreement; No Third Party Beneficiaries  . . . . . . . . . . . .  50
   Section 8.6.    Governing Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
   Section 8.7.    Assignment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51



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


                                      iii




                            TABLES OF DEFINED TERMS




                         
                                                           
TERMS                                                            CROSS REFERENCE
- -----                                                              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)


                                       iv






TERMS                                                            CROSS REFERENCE
- -----                                                              IN AGREEMENT 
                                                                 ---------------
                                                               
Governmental Entity                                              Section 3.3(c) 
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 Agreement                                           Preamble
Stockholder Support Agreement                                    Preamble
Subsidiary                                                       Section 3.1
Superior Proposal                                                Section 5.3(a)

                                       v



TERMS                                                            CROSS REFERENCE
- -----                                                              IN AGREEMENT 
                                                                 ---------------
Surviving Corporation                                            Section 1.6
Tax                                                              Section 3.7(a)
Taxes                                                            Section 3.7(a)
Third Party                                                      Section 5.3(a)
Transfer Taxes                                                   Section 5.25

                                       vi



                         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

                                       1


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;

    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

                                       2


relevant provisions of the DGCL (individually, a "Certificate of Merger" with 
respect to one of 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

                                       3


Effective Time shall be the initial officers of the Doubletree Surviving 
Corporation, each to hold 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

                                       4


of any shares  of Common Stock, par value $.10 per share, of Promus ("Promus 
Common Stock") or common stock of Promus Sub: 

       (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

                                       5


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 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 

                                       6



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 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 

                                  7



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 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 

                                   8



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 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 

                                  9



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, 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 

                                 10



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, 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 

                                  11



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 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.

                                   12



     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. 
Sections 1.1502-6 or comparable provisions of state, local or foreign tax 
law) and including any liability for Taxes of any predecessor entity.

         (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. 
Sections 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 

                                      13



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 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 

                                      14



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 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 

                                      15



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.

         (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 

                                      16



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 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 

                                      17



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 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).

                                      18



    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.


                                  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.

                                      19



    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 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.  

                                      20


    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 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,

                                       21


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 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

                                       22


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 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

                                       23


(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 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 

                                       24


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 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

                                       25


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 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

                                       26


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 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

                                       27


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 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

                                       28


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 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

                                       29


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 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

                                       30


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 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.

                                    31





     (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.

     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 


                                      32


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 
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.  


                                      33



     (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 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.

                                      34


     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 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 


                                      35


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 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 


                                      36


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 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.


                                      37


     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 
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 


                                      38


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 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 


                                      39


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 stamp taxes, any 
transfer, recording, registration and other fees or any similar taxes which 


                                      40


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. 


                                      41



       (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 



                                      42


management of Doubletree and Promus, as to the appropriateness of the pooling 
of interests accounting, under 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.

                                      43


       (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.

    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 




                                      44


       (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 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 



                                      45



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 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.



                                     46



    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:

                  (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 


                               47




                 (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 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 Agreement may 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


                                   48




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 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 and other 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


                                49



         (b)  if to Promus, to

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

                   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.


                                       50



    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.



                                       51


           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

                                       


                                   S-1