SCHEDULE 14A
(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14 INFORMATION

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934

Filed by the Registrant [X]

Filed by a Party other than the Registrant [_]

Check the appropriate box:

[_] Preliminary Proxy Statement [_]Confidential, for Use of the
Commission Only (as permitted by Rule
14a-6(e)(2))

[X] Definitive Proxy Statement

[_] Definitive Additional Materials

[_] Soliciting Material Pursuant to Section 240.14a-11(c) or Section 240.14a-12

AMERICAN TOWER CORPORATION
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(Name of Registrant as Specified In Its Certificate)

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(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[X] No fee required.

[_]Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

1) Title of each class of securities to which transaction applies:

2) Aggregate number of securities to which transaction applies:

3) Per unit price or other underlying value of transaction computed
pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the
filing fee is calculated and state how it was determined):

4) Proposed maximum aggregate value of transaction:

5) Total fee paid:

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[_] Fee paid previously with preliminary materials.

[_] Check box if any part of the fee is offset as provided by Exchange Act Rule
0-11(a)(2) and identify the filing for which the offsetting fee was paid
previously. Identify the previous filing by registration statement number,
or the Form or Schedule and the date of its filing.

1) Amount Previously Paid:

2) Form, Schedule or Registration Statement No.:

3) Filing Party:

4) Date Filed:
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[LOGO] American Tower Corporation

April 2, 2002

Dear Stockholder:

It is a pleasure to invite you to our 2002 Annual Meeting in Atlanta,
Georgia on Thursday, May 16, 2002 at 2:30 p.m., local time, at the Sheraton
Gateway Hotel Atlanta Airport, London Room, 1900 Sullivan Road, Atlanta,
Georgia 30337. We have included the official notice of meeting, proxy statement
and form of proxy with this letter. The proxy statement describes in detail the
matters listed in the notice of meeting.

The vote of every stockholder is important. Therefore, I urge you to sign
and date the enclosed proxy card and promptly return it in the enclosed
envelope so that your shares will be represented at the meeting. Alternatively,
you may also vote your shares over the Internet. Please refer to the enclosed
proxy card for detailed instructions. You may withdraw your proxy and vote in
person at the meeting if you wish to do so.

Your Board of Directors and management look forward to greeting those of
you who are able to attend.

Sincerely,

/s/ Steven Dodge
Steven B. Dodge
Chairman of the Board and
Chief Executive Officer

AMERICAN TOWER CORPORATION
116 HUNTINGTON AVENUE
BOSTON, MASSACHUSETTS 02116

-----------------

NOTICE OF 2002 ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD ON MAY 16, 2002

-----------------

To the Stockholders:

The 2002 Annual Meeting of Stockholders of American Tower Corporation, a
Delaware corporation, will be held at the Sheraton Gateway Hotel Atlanta
Airport, London Room, 1900 Sullivan Road, Atlanta, Georgia 30337 on Thursday,
May 16, 2002 at 2:30 p.m., local time, to consider and act upon the following
matters:

1. To elect seven directors, including two Class A directors to be elected
by the holders of Class A Common Stock voting separately as a class, for
the ensuing year or until their successors are elected and qualified;

2. To ratify the selection by the Board of Directors of Deloitte & Touche
LLP as our independent auditors for 2002; and

3. To transact such other business as may properly come before the meeting
or any adjournment or adjournments thereof.

Stockholders of record at the close of business on March 25, 2002 are
entitled to notice of, and to vote at, the Annual Meeting. Our stock transfer
books will remain open for the transfer of our Common Stock. For a period of
ten days prior to the Annual Meeting, a complete list of the stockholders
entitled to vote at the Annual Meeting will be available at our principal
executive offices for inspection by any stockholder of record for any purpose
germane to the Annual Meeting.

By order of the Board of Directors,

/s/ W. Robert Kellegrew, Jr.
W. Robert Kellegrew, Jr.
Secretary

Boston, Massachusetts
April 2, 2002

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WHETHER OR NOT YOU EXPECT TO ATTEND THE ANNUAL MEETING, PLEASE
COMPLETE, DATE AND SIGN THE ENCLOSED PROXY CARD AND PROMPTLY MAIL THE
PROXY CARD IN THE ENCLOSED ENVELOPE IN ORDER TO ASSURE REPRESENTATION
OF YOUR SHARES AT THE ANNUAL MEETING. NO POSTAGE NEED BE AFFIXED IF THE
PROXY CARD IS MAILED WITHIN THE UNITED STATES. ALTERNATIVELY, PLEASE
VOTE OVER THE INTERNET BY FOLLOWING THE INSTRUCTIONS ON THE ENCLOSED
PROXY CARD.

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AMERICAN TOWER CORPORATION
116 HUNTINGTON AVENUE
BOSTON, MASSACHUSETTS 02116

-----------------

PROXY STATEMENT
FOR THE 2002 ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD ON MAY 16, 2002

-----------------

GENERAL INFORMATION

This Proxy Statement is furnished in connection with the solicitation of
proxies by the Board of Directors of American Tower Corporation, a Delaware
corporation, for use at the 2002 Annual Meeting of Stockholders to be held on
May 16, 2002 or at any adjournment or postponement thereof.

We are mailing our Annual Report to Stockholders for the fiscal year ended
December 31, 2001 to stockholders with the mailing of this Proxy Statement on
or about April 8, 2002. Our Annual Report to Stockholders includes a copy of
our Annual Report on Form 10-K for the fiscal year ended December 31, 2001 as
filed with the SEC, except for exhibits.

RECORD DATE, VOTING RIGHTS AND OUTSTANDING SHARES

The Board of Directors has fixed March 25, 2002 as the record date for
determining holders of our Common Stock who are entitled to vote at the Annual
Meeting.

We have three classes of Common Stock issued and outstanding: Class A Common
Stock, $.01 par value per share, Class B Common Stock, $.01 par value per
share, and Class C Common Stock, $.01 par value per share. We refer to our
Class A Common Stock, our Class B Common Stock and our Class C Common Stock
collectively as our Common Stock.

With respect to the matters submitted for vote at the Annual Meeting, each
share of Class A Common Stock is entitled to one vote, and each share of Class
B Common Stock is entitled to ten votes. Our Class C Common Stock is not
entitled to vote on the matters submitted for vote at the Annual Meeting.

Except with respect to the election of two of the directors, our Class A
Common Stock and Class B Common Stock will vote as a single class in regards to
the matters submitted at the Annual Meeting. With respect to the election of
directors, the holders of Class A Common Stock are entitled by class vote,
exclusive of all other stockholders, to elect two Class A directors, whom we
refer to as the Class A Directors. On March 25, 2002, there were outstanding
and entitled to vote 185,018,963 shares of Class A Common Stock and 8,001,769
shares of Class B Common Stock.

The presence at the Annual Meeting, in person or by proxy, of the holders of
a majority of the votes represented by the Class A Common Stock and the Class B
Common Stock issued and outstanding on March 25, 2002 will constitute a quorum
for the transaction of business. For the separate vote of the Class A Common
Stock, a quorum will be the presence in person or by proxy of the holders of a
majority of the votes represented by the Class A Common Stock. We will count
votes withheld, abstentions and broker non-votes for purposes of determining
the presence or absence of a quorum for the transaction of business at the
Annual Meeting.

Stockholders who do not attend the Annual Meeting in person may submit
proxies by mail or over the Internet. Proxies in the enclosed form and proxies
properly submitted over the Internet, if received in time for voting and not
revoked, will be voted at the Annual Meeting in accordance with the
instructions contained therein. If no instructions are indicated, the shares
represented by the proxy will be voted:

. FOR the election of the Director nominees named herein;

. FOR the ratification of the appointment of Deloitte & Touche LLP as our
independent auditors for the current fiscal year; and

. In accordance with the judgment of the proxy holders as to any other
matter that may be properly brought before the Annual Meeting or any
adjournments thereof.

We will not count shares which abstain from voting on a particular matter,
and shares held in "street name" by brokers or nominees who indicate on their
proxies that they do not have discretionary authority to vote the shares as to
a particular matter ("broker non-votes"), as votes in favor of such matter. We
will also not count them as votes cast or shares voting on such matter.
Accordingly, abstentions and broker non-votes will have no effect on the
outcome of voting on the matters to be voted on at the Annual Meeting that
require the affirmative vote of a certain percentage or a plurality of the
votes cast on a matter.

You may vote by any one of the following means:

. by mail;

. over the Internet; or

. in person, at the Annual Meeting.

To vote by mail, sign, date and complete the enclosed proxy card and return
it in the enclosed self-addressed envelope. No postage is necessary if the
proxy card is mailed in the United States. Instructions for voting over the
Internet can be found on your proxy card. If you hold your shares through a
bank, broker or other nominee, it will give you separate instructions for
voting your shares.

REVOCABILITY OF PROXIES

Any stockholder giving a proxy has the power to revoke it at any time before
it is exercised. You may revoke the proxy by filing an instrument of revocation
or a duly executed proxy bearing a later date with our Secretary, at our
principal executive offices, 116 Huntington Avenue, Boston, Massachusetts
02116. You may revoke a proxy submitted over the Internet and submit a new
proxy in its place in accordance with the instructions set forth on the
Internet voting website. You may also revoke a proxy by attending the Annual
Meeting and voting in person. If not revoked, we will vote the proxy at the
Annual Meeting in accordance with your instructions indicated on the proxy card
or, if submitted over the Internet, as indicated on the submission.

SOLICITATION

We will bear all costs of solicitation of proxies. In addition to
solicitations by mail, our directors, officers and regular employees, without
additional remuneration, may solicit proxies by telephone, telecopy and
personal interviews. We will request brokers, banks, custodians and other
fiduciaries to forward proxy soliciting material to the beneficial owners of
stock they hold of record. We will reimburse them for their reasonable
out-of-pocket expenses incurred in connection with the distribution of the
proxy materials.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following sets forth certain information known to us as of March 1, 2002
with respect to the shares of Common Stock that are beneficially owned as of
such date by:

. each director;

. the Chief Executive Officer and the four other most highly compensated
executive officers who were serving as executive officers on December 31,
2001, whom we refer to collectively as the Named Executive Officers;

. all directors and executive officers as a group; and

. each person known by us to beneficially own more than 5% of our
outstanding Common Stock.

We determined the number of shares of Common Stock beneficially owned by
each person under rules promulgated by the Securities and Exchange Commission,
and the information is not necessarily indicative of beneficial ownership for
any other purpose. Under these rules, beneficial ownership includes any shares
as to which the individual or entity has sole or shared voting power or
investment power and also any shares which the individual or entity had the
right to acquire within sixty days of March 1, 2002 through the exercise of an
option, conversion feature or similar right. We refer to these options as
Presently Exercisable Options. All percentages are based on the shares of
Common Stock outstanding as of March 1, 2002. Except as noted below, each
holder has sole voting and investment power with respect to all shares of
Common Stock listed as owned by that holder.

PERCENT OF PERCENT OF
NUMBER OF PERCENT OF PERCENT OF COMMON TOTAL VOTING
NAME AND ADDRESS OF BENEFICIAL OWNER SHARES CLASS A CLASS B STOCK POWER
- ------------------------------------ ---------- ---------- ---------- ---------- ------------

DIRECTORS AND NAMED EXECUTIVE OFFICERS
Steven B. Dodge (1)................................ 9,171,403 * 77.74% 4.63% 27.85%
Thomas H. Stoner (2)............................... 1,021,348 * 11.70% * 3.56%
Alan L. Box (3).................................... 1,198,521 * -- * *
Arnold L. Chavkin (4).............................. 6,055,031 2.05% -- 3.10% 1.43%
James S. Eisenstein (5)............................ 566,591 * 1.53% * *
David W. Garrison (6).............................. 42,500 * -- * *
J. Michael Gearon, Jr. (7)......................... 3,017,259 1.63% -- 1.54% 1.14%
Fred R. Lummis (8)................................. 1,206,748 * -- * *
Steven J. Moskowitz (9)............................ 232,500 * -- * *
Pamela D. A. Reeve (10)............................ 25,000 * -- * *
Bradley E. Singer (11)............................. 65,000 * -- * *
Douglas C. Wiest (12).............................. 325,807 * -- * *
Maggie Wilderotter (13)............................ 60,000 * -- * *
All executive officers and directors as a group (17
persons) (14).................................... 23,886,840 6.58% 88.21% 11.85% 35.58%
FIVE PERCENT STOCKHOLDERS
Massachusetts Financial Services Company (15)...... 22,371,469 12.09% -- 11.46% 8.44%
SPO Partners & Co. (16)............................ 9,931,300 5.37% -- 5.09% 3.75%
FMR Corp. (17)..................................... 26,988,834 14.59% -- 13.82% 10.18%
J.P. Morgan Chase & Co. (18)....................... 11,251,307 6.08% -- 5.76% 4.25%

- --------
* Less than 1%.

(1) Mr. Dodge's address is 116 Huntington Avenue, Boston, Massachusetts 02116.
Includes 710,030 shares of Class A Common Stock and 924,864 shares of
Class B Common Stock owned by Mr. Dodge, an aggregate of 26,727 shares of
Class A Common Stock and 33,915 shares of Class B Common Stock owned by
three trusts for the benefit of Mr. Dodge's children, 4,790,000 shares of
Class B Common Stock owned by a limited liability company, of which Mr.
Dodge is the sole member, 5,000 shares of Class A Common Stock

owned by Mr. Dodge's wife, and 5,000 shares of Class B Common Stock owned
by a charitable foundation of which Mr. and Mrs. Dodge are trustees. Mr.
Dodge's wife and a third party serve as co-trustees for the three trusts.
Mr. Dodge disclaims beneficial ownership of all shares owned by the trusts,
the charitable foundation and his wife. Includes Presently Exercisable
Options to purchase an aggregate of 2,095,867 shares of Class B Common
Stock and 580,000 shares of Class A Common Stock.

(2) Mr. Stoner's address is 116 Huntington Avenue, Boston, Massachusetts
02116. Includes 31,311 shares of Class B Common Stock owned by his wife,
an aggregate of 829,559 shares of Class B Common Stock owned by certain
trusts, and 74,939 shares of Class B Common Stock and 10,000 shares of
Class A Common Stock owned by a charitable foundation of which Mr. Stoner
serves as an officer. Mr. Stoner disclaims beneficial ownership of the
shares owned by the charitable foundation. Includes Presently Exercisable
Options to purchase an aggregate of 75,539 shares of Class A Common Stock.

(3) Includes 644,858 shares of Class A Common Stock owned by Mr. Box, 2,635
shares of Class A Common Stock owned by Mr. Box's minor child and
Presently Exercisable Options to purchase an aggregate of 551,028 shares
of Class A Common Stock.

(4) Mr. Chavkin is as an Executive Partner of J.P. Morgan Partners, LLC
("JPMP"), which is the management company for the private equity division
of J.P. Morgan Chase & Co. He is also an Executive Vice President of JPMP
Capital Corp., the sole general partner of the general partner of J.P.
Morgan Partners (BHCA), L.P. ("BHCA") and the sole managing member of J.P.
Morgan Partners (23A SBIC), LLC ("JPSBIC"). Includes 121,719 shares of
Class A Common Stock and 2,267,813 shares of Class C Common Stock owned by
BHCA and 3,584,960 shares of Class A Common Stock owned by JPSBIC. Mr.
Chavkin disclaims beneficial ownership of those shares. Includes Presently
Exercisable Options to purchase an aggregate of 80,539 shares of Class A
Common Stock. The address of JPMP, BHCA and JPSBIC is 1221 Avenue of the
Americas, New York, New York 10020.

(5) Includes Presently Exercisable Options to purchase an aggregate of 442,280
shares of Class A Common Stock and Presently Exercisable Options to
purchase an aggregate of 124,311 shares of Class B Common Stock.

(6) Includes Presently Exercisable Options to purchase an aggregate of 32,500
shares of Class A Common Stock.

(7) Includes 727,443 shares of Class A Common Stock owned directly by Mr.
Gearon and an aggregate of 1,952,255 shares of Class A Common Stock owned
by limited partnerships that Mr. Gearon controls. Does not include 520,799
shares of Class A Common Stock held by a trust for the benefit of Mr.
Gearon's children, of which J. Michael Gearon, Sr. is the trustee. Mr.
Gearon disclaims beneficial ownership in all shares owned by the trust.
Includes Presently Exercisable Options to purchase an aggregate of 337,561
shares of Class A Common Stock. Mr. Gearon has pledged shares of Class A
Common Stock to secure a note to us. Mr. Gearon also beneficially owns
shares of our subsidiary ATC Mexico Holding Corp. See "Certain
Relationships and Related Transactions" under "Election of Directors"
below.

(8) Includes 69,105 shares of Class A Common Stock owned by Mr. Lummis, an
aggregate of 256,252 shares of Class A Common Stock owned by trusts of
which he is trustee, and 324,349 shares of Class A Common Stock owned by
Summit Capital, Inc., an affiliate of Mr. Lummis by reason of Mr. Lummis's
50% ownership of its common stock. Mr. Lummis disclaims beneficial
ownership of all shares owned by the trusts and Summit Capital, except to
the extent of his pecuniary interest therein. Includes Presently
Exercisable Options to purchase an aggregate of 557,042 shares of Class A
Common Stock.

(9) Includes Presently Exercisable Options to purchase an aggregate of 229,500
shares of Class A Common Stock.

(10) Ms. Reeve was elected a director in March 2002. She was granted a
Presently Exercisable Option to purchase an aggregate of 25,000 shares of
Class A Common Stock.

(11) Includes Presently Exercisable Options to purchase an aggregate of 60,000
shares of Class A Common Stock.

(12) Includes Presently Exercisable Options to purchase an aggregate of 322,251
shares of Class A Common Stock.

(13) Includes Presently Exercisable Options to purchase an aggregate of 60,000
shares of Class A Common Stock.

(14) Includes Presently Exercisable Options to purchase an aggregate of
3,954,320 shares of Class A Common Stock and Presently Exercisable Options
to purchase an aggregate of 2,412,107 shares of Class B Common Stock.

(15) The address of Massachusetts Financial Services Company ("MFS") is 500
Boylston Street, Boston, Massachusetts 02116. Based on MFS's Schedule 13G
dated February 11, 2002, MFS has sole voting power over 22,956,281 shares
of Class A Common Stock, and sole dispositive power over 24,041,746 shares
of Class A Common Stock. The shares over which MFS has voting and
dispositive power includes an aggregate of 106,924 shares of Class A
Common Stock that MFS may acquire through the conversion of convertible
notes.

(16) The address of SPO Partners & Co. ("SPO") is 591 Redwood Highway, Suite
3215, Mill Valley, California 94941. Based on SPO's Schedule 13G dated
February 14, 2002, certain affiliates and partners of SPO have, in the
aggregate, voting and dispositive power over 9,931,300 shares of Class A
Common Stock.

(17) The address of FMR Corp. ("FMR") is 82 Devonshire Street, Boston,
Massachusetts 02109. Based on FMR's Schedule 13G dated January 10, 2002,
FMR has sole voting power over 1,745,571 shares of Class A Common Stock,
and FMR, Edward C. Johnson 3rd and Abigail P. Johnson have dispositive
power over 26,988,834 shares of Class A Common Stock. FMR's Schedule 13G
also indicates that certain subsidiaries and affiliates of FMR are
considered beneficial owners of such shares as follows: Fidelity
Management & Research Company ("Fidelity Research "), a wholly-owned
subsidiary of FMR, is the beneficial owner of 25,021,655 shares of Class A
Common Stock; Fidelity Management Trust Company ("Fidelity Trust"), a
wholly-owned subsidiary of FMR, is the beneficial owner of 1,049,043
shares of Class A Common Stock; Strategic Advisors, Inc., a wholly-owned
subsidiary of FMR is the beneficial owner of 1,000 shares of Class A
Common Stock; and Fidelity International Limited ("Fidelity
International") is the beneficial owner of 917,136 shares of Class A
Common Stock. The shares beneficially owned by Fidelity Research, Fidelity
Trust and Fidelity International include shares of Class A Common Stock
which such entities may acquire through the conversion of convertible
notes.

(18) The address of J.P. Morgan Chase & Co. ("JPMC") is 270 Park Ave, New York,
NY 10017. Based on JPMC's Schedule 13G filed on February 14, 2002, JPMC
has sole voting power over 9,322,779 shares of Class A Common Stock, sole
dispositive power over 11,135,607 shares of Class A Common Stock and
shared dispositive power over 115,700 shares of Class A Common Stock.

PROPOSAL 1

ELECTION OF DIRECTORS

The Board of Directors currently consists of nine directors. Messrs. Thomas
H. Stoner and David W. Garrison have indicated that they will be retiring from
the Board of Directors at the expiration of their current terms. The Board of
Directors has voted to decrease its size to seven directors effective upon the
election of directors at this year's Annual Meeting, and has nominated for
election as directors at the Annual Meeting seven of the incumbent directors,
as listed below. Persons elected at the meeting will hold office until the 2003
Annual Meeting or until their successors are elected and qualified, subject to
earlier retirement, resignation or removal. If any of the nominees become
unavailable to serve, we will vote the shares represented by proxies for the
election of such other person as the Board of Directors may recommend. Unless
otherwise instructed, we will vote all proxies we receive FOR the nominees
listed below.

REQUIRED VOTE

Except for the election of the Class A Directors, the election of directors
requires a plurality of the votes properly cast by or on behalf of the holders
of Class A Common Stock and Class B Common Stock at the Annual Meeting, voting
as a single class. The election of the Class A Directors requires votes
properly cast by or on behalf of the holders of a plurality of Class A Common
Stock at the Annual Meeting, voting as a separate class.

Mr. Lummis and Ms. Wilderotter have been nominated as the Class A Directors.

THE BOARD OF DIRECTORS RECOMMENDS THAT YOU VOTE FOR THE ELECTION OF EACH OF
THE NOMINEES LISTED BELOW TO SERVE AS OUR DIRECTORS UNTIL THE NEXT ANNUAL
MEETING OR UNTIL THEIR SUCCESSORS ARE ELECTED AND QUALIFIED.

Set forth below are the name and age of each director, his or her principal
occupation and business experience during the past five years and the names of
other publicly traded companies of which he or she serves as a director as of
January 31, 2002.

NOMINEE PRINCIPAL OCCUPATIONS AND BUSINESS EXPERIENCE DURING THE PAST FIVE YEARS
- ------- --------------------------------------------------------------------------------

Steven B. Dodge Mr. Dodge has served as our Chairman of the Board and Chief Executive Officer
Age 56 since our organization. He also served as President until September 2001. Mr.
Dodge has been a member of the Executive Committee since November 1997.
Mr. Dodge was the Chairman of the Board of Directors, President and Chief
Executive Officer of American Radio from its founding in November 1993 until
our separation from American Radio Systems in June 1998. We refer to this as
the ATC Separation. In 1988, Mr. Dodge founded Atlantic Radio, one of the
predecessor entities of American Radio. Mr. Dodge currently serves as a director
of Citizens Financial Group, Inc., Nextel Partners, Inc., and Sothebys
Holdings, Inc.

Alan L. Box Mr. Box has been a director since our organization. From March 1998 to January
Age 50 2002 he served as an Executive Vice President responsible for our satellite and
fiber network access services business. Mr. Box served as our Chief Operating
Officer from June 1997 to March 1998. Mr. Box was an Executive Vice
President and a director of American Radio from April 1997, when EZ
Communications merged into American Radio, until the ATC Separation. Prior
to April 1997, Mr. Box had been the Chief Executive Officer of EZ
Communications, a company he joined in 1974.

NOMINEE PRINCIPAL OCCUPATIONS AND BUSINESS EXPERIENCE DURING THE PAST FIVE YEARS
- ------- ---------------------------------------------------------------------------------

Arnold L. Chavkin Mr. Chavkin has been a director and member of the Executive Committee and
Age 50 the Compensation Committee since November 1997. Mr. Chavkin is currently
also a member of the Audit Committee. Mr. Chavkin served on the Audit
Committee from the ATC Separation until May 2000, and was reappointed in
March 2001. Mr. Chavkin is an Executive Partner of JPMP, the investment
adviser to BHCA and JPSBIC, stockholders of ours. He is also an Executive
Vice President of JPMP Capital Corp., a subsidiary of JPMC, which is the
general partner of the general partner of BHCA. In addition, Mr. Chavkin has
been the President of Chemical Investments, Inc. since 1991. Mr. Chavkin serves
as a director of Better Minerals & Aggregates Co., Carolina Broadband, Carrizo
Oil & Gas Inc., Crown Media Holdings, Inc., Encore Acquisition Partners,
HDFC Bank, and Triton PCS Holdings Inc.

J. Michael Gearon, Jr. Mr. Gearon is one of our Vice Chairmen and President of American Tower
Age 37 International, and has been a director since our acquisition of Gearon
Communications in January 1998. From January 1998 until January 2002,
Mr. Gearon served as an Executive Vice President. Prior to joining us,
Mr. Gearon had been the founder and Chief Executive Officer of Gearon
Communications since September 1991.

Fred R. Lummis Mr. Lummis has been a director and member of the Audit Committee since our
Age 48 merger with American Tower Corporation ("Old ATC"), an unaffiliated
company, in June 1998. Mr. Lummis was the Chairman, Chief Executive Officer
and President of Old ATC from September 1994 through June 1998. From June
1998 until early 2000, Mr. Lummis also served as the Chairman, President and
Chief Executive Officer of Advantage Outdoor Company, L.P. Mr. Lummis has
been the President of Summit Capital, Inc., a private investment firm and a
substantial stockholder of Old ATC, since June 1990. He serves as a director of
Southwest Bancorporation of Texas and several private companies.

Pamela D. A. Reeve Ms. Reeve became a director in March 2002. Ms. Reeve is the President and
Age 52 Chief Executive Officer and a director of Lightbridge, Inc., a global provider of
mobile business solutions, offering products and services for the wireless
telecommunication industry. Prior to joining Lightbridge in 1989, Ms. Reeve
spent eleven years as a consultant and in a series of executive positions at the
Boston Consulting Group, Inc. Ms. Reeve serves as a director of NMS
Communications Corp.

Maggie Wilderotter Ms. Wilderotter has been a director since August 1998. Ms. Wilderotter has been
Age 47 a member of the Audit Committee since March 2001 and a member of the
Compensation Committee since November 1998. Ms. Wilderotter is the President
and Chief Executive Officer and a director of Wink Communications, Inc., a
provider of television-based interactive electronic-commerce services. Before
joining Wink in 1997, Ms. Wilderotter was the Executive Vice President of
National Operations for AT&T Wireless Services, Inc., and Chief Executive
Officer of AT&T's Aviation Communications Division. Ms. Wilderotter has also
served as Senior Vice President of McCaw Cellular Communications, Inc. and
Regional President of its California, Arizona, New Mexico, Nevada and Hawaii
Region. Ms. Wilderotter serves as a director of Airborne Express, Inc., Electric
Lightwave, Inc., Gaylord Entertainment Company, and The McClatchy
Corporation.

BOARD AND COMMITTEE MEETINGS

During the fiscal year ended December 31, 2001, our Board of Directors held
four regular meetings and took actions by written consent. Each of the current
directors who was then in office attended at least 75% of the aggregate number
of meetings of our Board and all of its committees on which that director
served. The Board committees consist of an Audit Committee, a Compensation
Committee and an Executive Committee. During the fiscal year ended December 31,
2001, the Compensation Committee held one meeting, the Executive Committee held
one meeting and the Audit Committee held six meetings. We do not have a
nominating committee.

Executive Committee. Our Executive Committee currently consists of Messrs.
Stoner (Chairman), Dodge and Chavkin. Mr. Stoner is not standing for reelection
as a director and our Board has not determined who, if anyone, will take his
place on the Executive Committee after the Annual Meeting. Between meetings of
our Board of Directors, our Executive Committee exercises all the powers of the
Board in the management and direction of our business, except as provided
otherwise by law, resolutions of the Board of Directors or our Restated
Certificate of Incorporation or By-laws.

Compensation Committee. Our Compensation Committee currently consists of
Messrs. Stoner (Chairman) and Chavkin and Ms. Wilderotter. Mr. Stoner is not
standing for reelection as a director and our Board has not determined who will
take his place on the Compensation Committee after the Annual Meeting. Our
Compensation Committee provides recommendations to the Board regarding
compensation strategy and programs and administers our stock option plan,
including the grant of stock options thereunder. It is also responsible for
establishing and modifying the compensation, including incentive compensation,
of all corporate officers, recommending adoptions of, and amendments to, all
stock option and other employee benefit plans and arrangements, terms of any
employment agreements and arrangements with, and the engagement and termination
of, all corporate executive officers.

Audit Committee. Our Audit Committee currently consists of Messrs. Lummis
(Chairman) and Chavkin and Ms. Wilderotter. It assists the Board in fulfilling
its responsibility to oversee management's conduct of our financial reporting
process. This includes the selection of our independent auditors and the review
of the financial reports and other financial information we provide to any
governmental or regulatory body, the public or other users, our systems of
internal accounting and financial controls, and the annual independent audit of
our financial statements.

New audit committee rules of the New York Stock Exchange became effective on
June 14, 2001. These rules require listed companies to have an audit committee
composed of a minimum of three members who meet specified standards for
independence and financial background. In re-appointing Mr. Chavkin to the
Audit Committee, our Board determined that Mr. Chavkin's position as an
Executive Partner of JPMP, which is an affiliate of BHCA and JPSBIC,
stockholders of ours, and The JPMorgan Chase Bank ("Chase Bank"), a lender
under our credit facilities, does not interfere with the exercise of his
independent judgment.

AUDIT COMMITTEE REPORT

The Audit Committee of the Company's Board of Directors is composed of three
members and acts under a written charter first adopted and approved in May
2000, amended in March 2001, and reapproved in March 2002. The members of the
Audit Committee are independent directors, as defined by the charter and the
rules of the New York Stock Exchange. The Audit Committee had six meetings
during the fiscal year ended December 31, 2001. A copy of the Audit Committee's
charter was attached to last year's Proxy Statement.

The Audit Committee reviewed the Company's audited financial statements for
the fiscal year ended December 31, 2001 and discussed these financial
statements with the Company's management. Management is responsible for the
Company's financial reporting process including its system of internal control
and for the preparation of consolidated financial statements in accordance with
generally accepted accounting principles. The Company's independent auditors,
Deloitte & Touche LLP, are responsible for performing an independent audit of
the Company's financial statements in accordance with generally accepted
auditing standards and for issuing a report on the financial statements. The
Audit Committee's responsibility is to monitor and review these processes. The
Audit Committee also reviewed and discussed the audited financial statements
and the matters required by Statement on Auditing Standards No. 61, as amended
(Communication with Audit Committees) with Deloitte & Touche LLP.

The Company's independent auditors also provided the Audit Committee with
the written disclosures and the letter required by Independence Standards Board
Standard No. 1 (Independence Discussions with Audit Committees). Independence
Standards Board Standard No. 1 requires auditors annually to disclose in
writing all relationships that in the auditor's professional opinion may
reasonably be thought to bear on independence, confirm their independence and
engage in a discussion of independence, which they did with the Audit
Committee. The Audit Committee also considered whether the independent
auditors' provision of other, non-audit related services to the Company is
compatible with maintaining such auditors' independence.

Based on its discussions with management and the independent auditors, and
its review of the representations and information provided by management and
the independent auditors, the Audit Committee recommended to the Company's
Board of Directors that the audited financial statements be included in the
Company's Annual Report on Form 10-K for the year ended December 31, 2001.

By the Audit Committee of the Board of Directors of American Tower
Corporation.

AUDIT COMMITTEE
Fred R. Lummis
Arnold L. Chavkin
Maggie Wilderotter

INDEPENDENT AUDITOR FEES AND OTHER MATTERS

The fees paid to our independent auditors for the year ended December 31,
2001 were as follows:

Audit Fees

Deloitte & Touche LLP billed us an aggregate of approximately $1.1 million
in fees (including expenses of approximately $74,000) for professional services
rendered in connection with the audit of our financial statements for the year
ended December 31, 2001 and the reviews of the financial statements included in
each of our Quarterly Reports on Form 10-Q during the fiscal year ended
December 31, 2001.

Financial Information Systems Design and Implementation Fees

During the fiscal year ended December 31, 2001, Deloitte & Touche LLP did
not perform or receive any fees for any professional services in connection
with financial information systems design or implementation, the operation of
our information system or the management of our local area network.

All Other Fees

Deloitte & Touche LLP billed us an aggregate of approximately $2.2 million
in fees (including expenses of approximately $64,000) for all other services
rendered to us and our affiliates for the fiscal year ended December 31, 2001.
The all other fees can be subcategorized as follows:

Attestation fees. The aggregate fees for attestation services rendered
by Deloitte & Touche LLP for matters such as comfort letters and consents
related to SEC and other registration statements, audits of employee benefit
plans, and agreed upon procedures was approximately $0.8 million.

Tax Fees. The aggregate fees for all tax services, such as consultation
related to tax planning and compliance, rendered by Deloitte & Touche LLP in
the 2001 fiscal year was approximately $1.4 million.

COMPENSATION AND OTHER INFORMATION CONCERNING DIRECTORS AND OFFICERS

DIRECTOR COMPENSATION

Our non-employee directors receive $2,500 for attending each board meeting,
$1,000 for serving on each committee on which he or she serves, and $3,000 for
serving on each committee on which he or she serves as chairperson. From time
to time, we also grant our non-employee directors options to purchase shares of
our Class A Common Stock. No stock was granted to our non-employee directors
during the fiscal year ended December 31, 2001. In January of 2002, we granted
each of Messrs. Chavkin and Lummis and Ms. Wilderotter an option to purchase
5,000 shares of Class A Common Stock at $5.91 per share. In March of 2002, we
granted Ms. Reeve an option to purchase 25,000 shares of Class A Common Stock
at $5.88 price per share. All of the options granted in 2002 to the
non-employee directors are immediately exercisable for 100% of the underlying
shares and expire at the end of ten years.

EXECUTIVE COMPENSATION

The following table provides certain information concerning compensation
earned by each of the Named Executive Officers for the fiscal years ended
December 31, 2001, 2000 and 1999:

SUMMARY COMPENSATION TABLE

LONG-TERM
ANNUAL COMPENSATION COMPENSATION
----------------------------------- ------------
SECURITIES
OTHER ANNUAL UNDERLYING ALL OTHER
NAME AND PRINCIPAL POSITION YEAR SALARY(A) BONUS COMPENSATION OPTIONS COMPENSATION(B)
- --------------------------- ---- --------- ------- ------------ ------------ ---------------

Steven B. Dodge (c).............. 2001 $220,180 - - - $ 2,186
Chairman of the Board 2000 229,757 - - 300,000(d) 774
and Chief Executive Officer 1999 412,363 - - 300,000 6,736

James S. Eisenstein.............. 2001 302,975 - - 5,000 11,250
Executive Vice President-- 2000 277,389 - - 100,000 8,540
Corporate Development 1999 263,263 - - 50,000 11,130

Steven J. Moskowitz (e).......... 2001 285,267 - - 10,000 11,915
Executive Vice President-- 2000 282,669 $50,000 - 100,000 8,940
Tower Division 1999 202,375 - - 60,000 756

Bradley E. Singer (f)............ 2001 326,237 - - - 19,666
Chief Financial Officer and 2000 68,960 - - 300,000 2,044
Treasurer

Douglas C. Wiest (g)............. 2001 352,975 - - - 45,249
President, Galaxy Engineering 2000 302,354 - - 125,000 83,135
Services 1999 318,001 - - 60,000 8,400

- --------
(a) Includes employer's 401(k) plan contributions.
(b) Includes group term life insurance, automobile expenses and parking
expenses paid by employer and, in the case of Messrs. Singer and Wiest,
imputed interest.
(c) Mr. Dodge served as Chairman of the Board, President and Chief Executive
Officer through September 3, 2001. Mr. Dodge currently serves as Chairman
of the Board and Chief Executive Officer.
(d) Mr. Dodge surrendered and forfeited for no consideration this option to
purchase 300,000 shares of Class A Common Stock at an exercise price of
$30.625 per share in 2001.
(e) Mr. Moskowitz served as our Executive Vice President--Marketing and Vice
President and General Manager of Northeast Region in 2001. Mr. Moskowitz
currently serves as Executive Vice President--Tower Division.

(f) Mr. Singer served as Executive Vice President--Finance and Vice President
and General Manager of Southeast Region in 2001. Mr. Singer currently
serves as Chief Financial Officer and Treasurer. Mr. Singer joined the
company in September 2000 as Executive Vice President--Strategy.
(g) Mr. Wiest served as Chief Operating Officer until September 2001 at which
time he became Executive Vice President--Tower Division. Mr. Wiest
currently serves as President, Galaxy Engineering Services.

James D. Taiclet, Jr. joined us as President and Chief Operating Officer on
September 3, 2001 at an initial annual salary of $500,000.

OPTIONS GRANTED IN 2001

The following table sets forth certain information relating to options
granted in 2001 pursuant to our Stock Option Plan to the individuals named in
the Summary Compensation Table above. In addition to the options set forth
below, on November 7, 2001, we granted Mr. Taiclet a ten-year option to
purchase 500,000 shares of Class A Common Stock at $5.98 per share. This option
vests as to 25% of the shares on an annual basis over four years. The potential
realizable value at assumed annual rates of stock price appreciation of 5% and
10% for the term of the option would be $1,880,395 and $4,765,290, respectively.

Option Grants in Last Fiscal Year

Potential Realizable
Value at Assumed
Annual Rates of Stock
Price Appreciation for
Individual Grants Option Term(c)
--------------------------------------------------- ----------------------
Number of Percent of
Securities Total Options
Underlying Granted to
Options Employees in Exercise Price Expiration
Name Granted Fiscal 2001(A) Per Share(b) Date 5% 10%
- ---- ---------- -------------- -------------- ---------- ------- --------

James S. Eisenstein 5,000 0.2% $14.45 4/3/11 $45,438 $115,148
Steven J. Moskowitz 10,000 0.4% $15.40 4/9/11 $96,850 $245,436

- --------
(a) Based on options to purchase an aggregate of 2,482,100 shares granted to
our employees and directors pursuant to our Stock Option Plan during the
year ended December 31, 2001.
(b) The exercise price per share of each option was equal to the fair market
value per share of the underlying stock as valued by the Board of Directors
on the date of grant.
(c) The potential realizable value is calculated based on the term of option at
the time of grant. Stock price appreciation of 5% and 10% is assumed
pursuant to rules promulgated by the Securities and Exchange Commission and
does not represent our prediction of stock price performance. The potential
realizable values at 5% and 10% appreciation are calculated by assuming
that the exercise price on the date of grant appreciates at the indicated
rate for the entire term of the option and that the option is exercised at
the exercise price and sold on the last day of its term at the appreciated
price.

AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END OPTION
VALUES

The following table sets forth certain information regarding the unexercised
options granted pursuant to our Stock Option Plan (or outstanding with respect
to options granted under predecessor plans) to the individuals referred to in
the Summary Compensation Table above. None of the Named Executive Officers
exercised any options during 2001.

Aggregated Option Values in Last Fiscal Year
and Fiscal Year-end Option Values

Number of Securities
Underlying Unexercised Value of Unexercised In-the-
Options at Money Options at
December 31, 2001 December 31, 2001(A)
------------------------- ----------------------------
Name Exercisable Unexercisable Exercisable Unexercisable
---- ----------- ------------- ----------- -------------

Steven B. Dodge..... 2,273,712 1,562,155 $2,306,453 $19,818
James S. Eisenstein. 554,279 175,462 $1,901,270 $21,739
Steven J. Moskowitz. 199,000 221,000 - -
Bradley E. Singer... 60,000 240,000 - -
Douglas C. Wiest.... 274,251 275,750 - -

- --------
(a) Based on the closing price of the Class A Common Stock on the New York
Stock Exchange on December 31, 2001 of $9.47 per share.

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

Chase Bank, an entity related to JPMP, BHCA and JPSBIC, affiliates of
Mr. Chavkin, has been and is a lender under our credit facilities. See "Certain
Relationships and Related Transactions".

COMPENSATION COMMITTEE REPORT

The Compensation Committee has the responsibility to review, recommend and
approve our compensation policies and programs, including all compensation for
the Chief Executive Officer and the other executive officers. The Compensation
Committee consists entirely of directors who are both "non-employee" directors
within the meaning of Rule 16b-3 under Section 16 of the Securities Exchange
Act of 1934, and "outside" directors within the meaning of Section 162(m) of
the Internal Revenue Code of 1986, and the regulations thereunder, so that
grants of options under our Stock Option Plan to executive officers are exempt
under Rule 16b-3 and eligible for the "performance-based" exception of Section
162(m) of the Internal Revenue Code. The Compensation Committee administers our
Stock Option Plan and in exercise of that function determines what grants of
stock options thereunder are to be made to the Chief Executive Officer and the
other executive officers.

The compensation policies adopted and implemented by the Compensation
Committee, combining base salary and incentive compensation principally in the
form of long-term stock options with a four- or five-year vesting schedule, are
designed to achieve our business and growth strategies and goals. By placing a
greater emphasis on the long-term incentive aspects of the overall compensation
program, the Compensation Committee hopes that financial incentives will be
provided to motivate those responsible for achieving those goals and, at the
same time, align the interests of those persons with those of the stockholders.
The purpose of our Stock Option Plan is to encourage key employees, directors
and advisors who render services of special importance to us, and who have
contributed or are expected to contribute materially to our success, to
continue their association by providing favorable opportunities for them to
participate in stock ownership and in future growth. Among the information that
the Compensation Committee reviews in establishing both annual compensation and
the option pool and option grants under our Stock Option Plan is information
regarding those matters for our competitors, the industry and for publicly
traded companies of comparable size.

The Compensation Committee determined the salary levels of the executive
officers, including the Chief Executive Officer, for 2001. With competitor and
industry information by way of guidance, the Compensation Committee evaluated
the individual performance of each executive officer, including his past or
expected future

contributions to our business and strategic goals, especially the efforts of
each of them in connection with our revised strategic plan which focuses on
operational performance and improvements, customer relationships, and sales and
marketing activities. Finally, the Compensation Committee measured the
individual performance of each executive officer in light of the performance of
the company, including in comparison to our annual budget, with emphasis on the
particular responsibilities of that officer. The Compensation Committee did not
grant any stock options to Messrs. Dodge, Singer, and Wiest in 2001. Messrs.
Eisenstein and Moskowitz were the only Named Executive Officers to whom options
were granted in 2001. Messrs. Eisenstein and Moskowitz received options in
April 2001 to purchase 5,000 and 10,000 shares, respectively, of Class A common
Stock at $14.45 and $15.40 per share, respectively.

The Compensation Committee determines the compensation of Mr. Dodge, as
Chairman of the Board and Chief Executive Officer, based upon the same factors
as those employed by it for executive officers generally. In addition, the
Compensation Committee weighs Mr. Dodge's leadership, industry prominence, and
our overall performance as important criteria upon which his compensation is
based. Mr. Dodge voluntarily reduced his compensation for 2001, as he did in
2000, and also voluntarily surrendered options to purchase 300,000 shares of
Class A Common Stock at $30.625 per share in order to expand the pool of
options available to other key employees. The Compensation Committee believes
that Mr. Dodge's 2001 compensation, as so reduced, was significantly below
market rates given his historic and anticipated contributions and our operating
performance in 2001.

Section 162(m) of the Internal Revenue Code generally disallows an income
tax deduction to public companies for compensation in excess of $1,000,000 paid
in any year to the chief executive officer or any of the four most highly
compensated other executive officers. Qualified "performance-based"
compensation within the meaning of Section 162(m) is an exception to this
limitation. Although the Compensation Committee has not adopted any specific
rules with respect to this issue, its general policy, subject to all then
prevailing relevant circumstances, is to attempt to structure our option grants
to maximize deductions for federal income tax purposes.

COMPENSATION COMMITTEE
Thomas H. Stoner, Chairman
Arnold L. Chavkin
Maggie Wilderotter

EMPLOYMENT AGREEMENTS AND SEVERANCE ARRANGEMENTS

Mr. Wiest is the only Named Executive Officer with an employment agreement.
Mr. Wiest's employment agreement provides for a lump sum cash payment of
$350,000, or 1.5 times his salary, if Mr. Wiest's employment is terminated
(except for cause) within five years of the date of the agreement (April 13,
1998).

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Chase Bank is a lender in our credit facilities and had a participation
percentage ranging from 1.68% to 3.14% during 2001. Chase Bank is an affiliate
of JPMP, BHCA and JPSBIC. BHCA and JPSBIC are stockholders of ours. Mr.
Chavkin, one of our directors, is an Executive Partner of JPMP. The aggregate
principal amount outstanding under those credit facilities was $1.4 billion as
of December 31, 2001. Chase Bank's participation in our credit facilities at
December 31, 2001 was 1.68%. Chase Bank's share of interest and fees earned
from us pursuant to our various credit arrangements during 2001 was
approximately $1.5 million.

In March 2001, we purchased 78,432 shares of Class B common stock, par value
$0.01 per share, of America Connect, a Delaware privately owned corporation,
from JPSBIC, for 100,000 shares of our Class A Common Stock. We and a
predecessor of JPSBIC had each invested in America Connect in January 2000, at
which time we invested $5.0 million for 98,039 shares of Class B common stock
of America Connect and JPSBIC's predecessor invested $4.0 million for its
shares.

In October 2001, we consummated the sale of 8.7% of our Mexican subsidiary,
ATC Mexico Holding Corp. (ATC Mexico Holding), to J. Michael Gearon, Jr., an
executive officer and director, for $8.4 million. Mr. Gearon paid $1.7 million
in cash and delivered a 7% secured note due 2010 in the principal amount of
$6.7 million. The note, which accrues interest and is payable quarterly, is
secured with recourse only to shares of our Class A Common Stock owned by Mr.
Gearon and his interest in ATC Mexico Holding. The purchase price represented
the fair market value of an 8.7% interest in ATC Mexico Holding on the date of
the sale as determined by an independent appraiser. Mr. Gearon may require us
to purchase his interest in ATC Mexico Holding for its then fair market value
any time after the soonest to occur of July 1, 2004, a "Change in Control" of
us or ATC Mexico Holding, or Mr. Gearon's death or disability. We have the
right to purchase Mr. Gearon's interest in ATC Mexico Holding for its then fair
market value after the soonest to occur of July 1, 2005, Mr. Gearon's death or
disability or on either a "Gearon Termination Event" or a "Forfeiture Event" as
defined in the Agreement.

James S. Eisenstein, our Executive Vice President--Corporate Development,
received a $1.0 million demand loan from us in August 1998 and repaid
approximately $686,000 in 1999. The loan was interest-free during this period.
The balance of the loan was assigned to a third party in 2000 and was repaid in
full during the year ended December 31, 2001.

David J. Porte, our Executive Vice President--Technology and Strategy,
received a $144,000 demand loan from us in October 2001, all of which was
outstanding as of December 31, 2001. The loan bears interest one year after
issue at the applicable federal rate determined by the Internal Revenue Service
related to imputed interest.

Bradley E. Singer, our Treasurer and Chief Financial Officer, received a
$180,000 demand loan from us in 2001, all of which was outstanding as of
December 31, 2001. The loan bears interest one year after issue at the
applicable federal rate determined by the Internal Revenue Service related to
imputed interest.

Mr. Wiest, President, Galaxy Engineering Services, received a $700,000
demand loan from us in March 1999 and an additional advance in December 1999 of
$100,000. As of December 31, 2001, the outstanding principal amount of the loan
was $700,000. The loan bears interest one year after issue at the applicable
federal rate determined by the Internal Revenue Service related to imputed
interest.

During the past three years, we retained several wholly-owned subsidiaries
of Nordblom Co. Inc. to provide various real estate services to us in
connection with our acquisition, financing, ownership and leasing of several
properties. Services rendered by those companies included advice in connection
with the acquisition and arranging mortgage financing of our principal
executive office building in Boston and two other office buildings in which we
have regional offices, the management of those buildings, and the leasing of
certain of them. For two of the properties in which we retained Nordblom, we
solicited bids from another nationally recognized real estate management
company and, with respect to each service, accepted the lower proposal,
including, in one instance, that of the other company. The other office
building involved our purchase from an unaffiliated party of an 83% interest.
The balance of the property was at the time and is now owned by affiliates of
Nordblom and we accepted the existing agreements with the Nordblom companies
and their affiliates, Nordic Properties, that had been negotiated by the prior
owner who was an unaffiliated party and retained one of the Nordblom companies
to arrange the mortgage financing. Earlier this year, we replaced the
unaffiliated manager of an office building in which we have a regional office
with Nordblom at a significantly lower fee. We can terminate our arrangements
with the Nordblom companies on sixty days notice and with Nordic Properties
sixty days prior to the annual renewal of the contract. We paid the Nordblom
companies, including Nordic Properties, an affiliate of Nordblom, an aggregate
of $772,000, $474,000 and $142,000 in 2001, 2000 and 1999, respectively. Two
brothers of Mr. Dodge's wife own slightly more than three-quarters of Nordblom
Co. Inc. and one of them owns slightly less than a majority of Nordic
Properties; her father owns 1% of Nordblom Co. Inc. and 10% of Nordic
Properties. Mr. Dodge's wife has no interest in Nordblom Co. Inc. or Nordic
Properties, and Mr. Dodge was not involved in the negotiation of any of the
arrangements. Based on competitive bids received for similar services, we
believe that all of the arrangements with the Nordblom companies are on terms
and conditions that are customary in the industry and at least as favorable to
us as we could obtain from other recognized real estate management companies.

PERFORMANCE GRAPH

The following graph compares the percentage change in the Class A Common
Stock to (1) the cumulative total return of the Russell Midcap Index (Broad
Market index), (2) the group of companies selected as our peers in the
communications site industry at the current time (New Peer Group) and (3) the
group of companies selected as our peers and contained in the performance graph
in our proxy statement for 2001 (Old Peer Group). The graph assumes that $100
was invested in the Class A Common Stock and in each index or peer group on
June 5, 1998. The Old Peer Group includes Crown Castle International,
Spectrasite Holdings, Pinnacle Holdings, SBA Communications, and LCC
International. Pinnacle Holdings and SBA Communications became public companies
in 1999. The New Peer Group includes all of the members of the Old Peer Group,
with the exception of LCC International. We deleted LCC International from our
Peer Group this year because we no longer consider it to be a primary
competitor in the operation and management of communications and broadcast
towers, our core business.

On February 27, 1998, the Class A Common Stock commenced trading on a "when
issued" basis on the inter-dealer bulletin board of the over-the-counter
market. Our Class A Common Stock commenced trading on the NYSE on June 5, 1998,
the day after the ATC Separation. The following graph presents the trading
information commencing on June 5, 1998 and does not present the trading
information for such "when issued" market. The cumulative return assumes
reinvestment of all dividends. The performance of our Class A Common Stock
reflected below is not necessarily indicative of future performance.

COMPARISON OF CUMULATIVE TOTAL RETURN BETWEEN AMERICAN TOWER CORPORATION,
RUSSELL MIDCAP INDEX, AND PEER GROUP INDEX

[CHART]

American Russell Midcap New Peer Old Peer
Tower Corp. Index Group (4 stocks) Group (5 stocks)

Jun-98 100 100 100 100
Dec-98 129 101 202 118
Dec-99 134 120 292 178
Dec-00 166 130 228 138
Dec-01 41 122 77 48

CUMULATIVE TOTAL RETURNS
----------------------------------------------------
6/5/1998 12/31/1998 12/31/1999 12/29/2000 12/31/2001
- - -------- ---------- ---------- ---------- ----------

American Tower Corporation 100 129 134 166 41
Russell Midcap Index...... 100 101 120 130 122
New Peer Group............ 100 202 292 228 77
Old Peer Group............ 100 118 178 138 48

PROPOSAL 2

RATIFICATION OF SELECTION OF INDEPENDENT AUDITORS

Subject to ratification by the stockholders, the Board of Directors has
selected the firm of Deloitte & Touche LLP as our independent auditors for the
current year. Deloitte & Touche LLP has served as our independent auditors
since our organization.

Representatives of Deloitte & Touche LLP are expected to be present at the
Annual Meeting. They will have the opportunity to make a statement if they
desire to do so and will also be available to respond to appropriate questions
from stockholders.

If the stockholders do not ratify the selection of Deloitte & Touche LLP as
our independent auditors, the Board of Directors will reconsider the selection
of them.

THE BOARD OF DIRECTORS RECOMMENDS THAT THE STOCKHOLDERS VOTE FOR THE
RATIFICATION OF THE SELECTION OF DELOITTE & TOUCHE LLP TO SERVE AS OUR
INDEPENDENT AUDITORS FOR THE CURRENT FISCAL YEAR.

ADDITIONAL INFORMATION

OTHER MATTERS

The Board of Directors does not know of any other matters that may come
before the Annual Meeting. However, if any other matters are properly presented
at the meeting, it is the intention of the persons named in the accompanying
proxy or their substitutes acting hereunder, to vote, or otherwise act, in
accordance with their best judgment on those matters.

SECTION 16(A) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

Section 16(a) of the Exchange Act requires our directors, executive officers
and persons who own more than ten percent of a registered class of our equity
securities to file reports of ownership on Form 3 and changes in ownership on
Form 4 or 5 with the SEC. Such officers, directors and ten-percent stockholders
are also required by SEC rules to furnish us with copies of all Section 16(a)
reports they file. We reviewed copies of the forms received by us or written
representation from certain reporting persons that they were not required to
file a Form 5. Based solely on that review, we believe that, during the fiscal
year ended December 31, 2001, our officers, directors and ten-percent
stockholders complied with all Section 16(a) filing requirements applicable to
them, except that Mr. Chavkin, one of our directors, omitted to report on a
Form 5 for the fiscal year 1998 the grant on December 1, 1998 of a stock option
to purchase 25,000 shares. Mr. Chavkin filed an amended Form 5 for 1998 in
February 2002 to correct the omission. In addition, in March 2001, Mr. Chavkin
filed an amended Form 4 for the month of January 2001 to correct an earlier
filing that omitted to include 2,016 shares indirectly held by an affiliated
entity and Mr. Chavkin reported late one transaction occurring in March 2001 by
filing a Form 4 in August 2001.

PROPOSALS OF STOCKHOLDERS

Pursuant to Rule 14a-8 promulgated under the Securities Exchange Act of
1934, in order to be included in the proxy statement and form of proxy relating
to our 2003 Annual Meeting, we must receive no later than December 4, 2002 any
proposals of stockholders intended to be presented at the meeting. In addition,
any proposals must comply with the other requirements of Rule 14a-8.

If you wish to present a proposal before the 2003 Annual Meeting, but do not
wish to have the proposal considered for inclusion in the proxy statement and
proxy card, you must also give written notice to us at 116 Huntington Avenue,
Boston, Massachusetts 02116, Attention: Secretary. If you fail to deliver that
notice so that the Secretary receives it no later than February 17, 2003, then
proxies designated by the Board of Directors will have discretionary authority
to vote on any such proposal.

HOUSEHOLDING OF ANNUAL MEETING MATERIALS

Some banks, brokers and other nominee record holders may be participating in
the practice of "householding" proxy statements and annual reports. This means
that only one copy of our proxy statement or annual report may have been sent
to multiple stockholders in your household. We will promptly deliver a separate
copy of either document to you if you write or call us at the following address
or phone number: American Tower Corporation, 116 Huntington Avenue, Boston,
Massachusetts 02116, Attention: Director of Investor Relations (617-375-7500).
If you wish to receive separate copies of the annual report and proxy statement
in the future, or if you are receiving multiple copies and would like to
receive only one copy for your household, you should contact your bank, broker,
or other nominee record holder, or you may contact us at the above address and
phone number.

ANNUAL REPORT ON FORM 10-K

PORTIONS OF THE COMPANY'S ANNUAL REPORT ON FORM 10-K FOR THE FISCAL YEAR
ENDED DECEMBER 31, 2001, INCLUDING INFORMATION RELATING TO OUR EXECUTIVE
OFFICERS, ARE INCORPORATED HEREIN BY REFERENCE. A COPY OF OUR FORM 10-K AS
FILED WITH THE SEC, EXCEPT FOR EXHIBITS, WILL BE FURNISHED WITHOUT CHARGE TO
ANY STOCKHOLDER UPON WRITTEN REQUEST. PLEASE WRITE OR CALL OUR DIRECTOR OF
INVESTOR RELATIONS AT THE FOLLOWING ADDRESS OR PHONE NUMBER: AMERICAN TOWER
CORPORATION, 116 HUNTINGTON AVENUE, BOSTON, MASSACHUSETTS 02116 (617-375-7500).

By Order of the Board of Directors,

/s/ Steven Dodge
Chairman of the Board and
Chief Executive Officer

Boston, Massachusetts
April 2, 2002

APPENDIX I

PROXY PROXY
CLASS A CLASS A

AMERICAN TOWER CORPORATION
116 HUNTINGTON AVENUE
BOSTON, MASSACHUSETTS 02116

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

The undersigned hereby appoints STEVEN B. DODGE, JAMES D. TAICLET, JR.,
BRADLEY E. SINGER AND W. ROBERT KELLEGREW, JR., and each of them, as Proxies of
the undersigned, each with the power to appoint his substitute, and hereby
authorizes a majority of them, or any one if only one be present, to represent
and to vote, as designated below and on the reverse hereof, all the Class A
Common Stock, $.01 par value per share, of American Tower Corporation held of
record by the undersigned or with respect to which the undersigned is entitled
to vote or act at the 2002 Annual Meeting of Stockholders to be held on May 16,
2002 or any adjournments thereof.

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED
HEREIN BY THE UNDERSIGNED STOCKHOLDER(S). IF NO DIRECTIONS ARE MADE, THE PROXIES
WILL VOTE FOR EACH OF THE MATTERS LISTED ON THE REVERSE SIDE OF THIS CARD AND,
AT THEIR DISCRETION, ON ANY OTHER MATTER THAT MAY PROPERLY COME BEFORE THE
MEETING.

PLEASE VOTE, SIGN, DATE AND RETURN THIS PROXY CARD PROMPTLY
USING THE ENCLOSED ENVELOPE.

(Continued and to be signed on reverse side.)

American Tower Corporation
P.O. Box 11178
New York, NY 10203-0178

AMERICAN TOWER CORPORATION

CLASS A VOTE BY INTERNET CLASS A
24 HOURS A DAY - 7 DAYS A WEEK
IT'S FAST AND CONVENIENT

INTERNET https://proxyvotenow.com/amt
Use the Internet to vote your proxy. Have your proxy card in hand when you
access the website. You will be prompted to enter your control number, located
in the box below, to create an electronic ballot.

MAIL
Mark, sign and date your proxy card and return it in the postage-paid envelope
we have provided.

Your Internet vote authorizes the named proxies to vote your shares in the same
manner as if you marked, signed and returned the proxy card.
If you have submitted your proxy by Internet there is no need for you to mail
back your proxy.

PROXY CLASS A

---------------------------------------------------------
CONTROL NUMBER FOR TELEPHONE OR INTERNET VOTING

VOTE BY INTERNET https://proxyvotenow.com/amt
DETACH PROXY CARD HERE IF YOU ARE NOT VOTING BY INTERNET
- --------------------------------------------------------------------------------

Mark, Sign, Date and Return the Proxy Votes MUST be indicated
Card Promptly Using the Enclosed Envelope. (x) in Black or Blue ink. /X/

CLASS A AMERICAN TOWER CORPORATION CLASS A

1. ELECTION OF DIRECTORS - To elect seven (7) members to the Board of Directors
of American Tower Corporation:

FOR ALL WITHHOLD AUTHORITY EXCEPTIONS*
nominees listed below /X/ to vote for all nominees listed below /X/ as written below /X/

Nominees: 01 - Steven B. Dodge, 02 - Arnold L. Chavkin, 03 - Alan L. Box,
04 - Fred R. Lummis, 05 - J. Michael Gearon, Jr.,
06 - Pamela D. A. Reeve and 07 - Maggie Wilderotter

(INSTRUCTIONS: To withhold authority to vote for any individual nominee, mark
the "Exceptions" box and write that nominee's name in the space provided below.)

*EXCEPTIONS

---------------------------------

2. RATIFICATION OF INDEPENDENT AUDITORS - FOR /X/ AGAINST /X/ ABSTAIN /X/
Ratification of Deloitte & Touche LLP
as independent auditors for 2002.

TO TRANSACT SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE ANNUAL MEETING.

To change your address, please mark this box. /X/

Please vote on our website at https://proxyvotenow.com/amt or sign, date and
return this proxy in the enclosed prepaid envelope. Please sign exactly as your
name appears hereon when signing in a representative capacity, please give full
title.

Date Share owner sign here Co-owner sign here

- ------------- ------------------------ ------------------

APPENDIX II

PROXY PROXY
CLASS B CLASS B

AMERICAN TOWER CORPORATION
116 HUNTINGTON AVENUE
BOSTON, MASSACHUSETTS 02116

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

The undersigned hereby appoints STEVEN B. DODGE, JAMES D. TAICLET, JR.,
BRADLEY E. SINGER AND W. ROBERT KELLEGREW, JR., and each of them, as Proxies of
the undersigned, each with the power to appoint his substitute, and hereby
authorizes a majority of them, or any one if only one be present, to represent
and to vote, as designated below and on the reverse hereof, all the Class B
Common Stock, $.01 par value per share, of American Tower Corporation held of
record by the undersigned or with respect to which the undersigned is entitled
to vote or act at the 2002 Annual Meeting of Stockholders to be held on May 16,
2002 or any adjournments thereof.

PLEASE VOTE, SIGN, DATE AND RETURN THIS PROXY CARD PROMPTLY
USING THE ENCLOSED ENVELOPE.

(Continued and to be signed on reverse side.)

American Tower Corporation
P.O. Box 11175
New York, NY 10203-0175

AMERICAN TOWER CORPORATION

CLASS B VOTE BY INTERNET CLASS B
24 HOURS A DAY - 7 DAYS A WEEK
IT'S FAST AND CONVENIENT

MAIL
Mark, sign and date your proxy card and return it in the postage-paid envelope
we have provided.

PROXY CLASS B

---------------------------------------------------------
CONTROL NUMBER FOR TELEPHONE OR INTERNET VOTING

VOTE BY INTERNET https://proxyvotenow.com/amt
DETACH PROXY CARD HERE IF YOU ARE NOT VOTING BY INTERNET
- --------------------------------------------------------------------------------

Mark, Sign, Date and Return the Proxy Votes MUST be indicated
Card Promptly Using the Enclosed Envelope. (x) in Black or Blue ink. /X/

CLASS B AMERICAN TOWER CORPORATION CLASS B

1. ELECTION OF DIRECTORS - To elect five (5) members to the Board of Directors
of American Tower Corporation:

FOR ALL WITHHOLD AUTHORITY EXCEPTIONS*
nominees listed below /X/ to vote for all nominees listed below /X/ as written below /X/

Nominees: 01 - Steven B. Dodge, 02 - Arnold L. Chavkin, 03 - Alan L. Box,
04 - J. Michael Gearon, Jr. and 05 - Pamela D. A. Reeve

(INSTRUCTIONS: To withhold authority to vote for any individual nominee, mark
the "Exceptions" box and write that nominee's name in the space provided below.)

*EXCEPTIONS

---------------------------------

2. RATIFICATION OF INDEPENDENT AUDITORS - FOR /X/ AGAINST /X/ ABSTAIN /X/
Ratification of Deloitte & Touche LLP
as independent auditors for 2002.

TO TRANSACT SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE ANNUAL MEETING.

To change your address, please mark this box. /X/

Date Share owner sign here Co-owner sign here

- ------------- ------------------------ ------------------