American Tower Corporation Announces Offering of $300.0 Million Senior Notes

BOSTON--(Business Wire)--
American Tower Corporation (NYSE: AMT) announced today that it intends to offer
$300.0 million aggregate principal amount of 10-year fixed rate senior unsecured
notes in an institutional private placement.

The Company intends to use the net proceeds from this proposed offering (i) to
finance the repurchase of the Company`s 7.50% senior notes due 2012 through a
tender offer and, if any such notes remain outstanding following the
consummation of the tender offer, to finance the redemption of such notes
pursuant to their terms and the terms of the indenture under which they were
issued; (ii) to repay $50 million outstanding indebtedness incurred under the
Company`s senior unsecured revolving credit facility; and (iii) for general
corporate purposes. The tender offer is being made solely by means of the tender
offer documentation.

This announcement is neither an offer to sell nor a solicitation of an offer to
buy any of these notes, solicitation or sale in any jurisdiction in which such
offer, solicitation or sale is unlawful. The notes subject to the proposed
offering have not been registered under the Securities Act of 1933, as amended,
or any state securities laws, and are being offered only to qualified
institutional buyers in reliance on Rule 144A under the Securities Act and to
non-U.S. persons in offshore transactions in reliance on Regulation S under the
Securities Act. Unless so registered, the notes may not be offered or sold in
the United States or to, or for the account or benefit of, U.S. persons except
pursuant to an exemption from the registration requirements of the Securities
Act and applicable state securities laws.

Cautionary Language Concerning Forward-Looking Statements

This press release contains statements about future events and expectations, or
"forward-looking statements", all of which are inherently uncertain. We have
based those forward-looking statements on management`s current expectations and
assumptions and not on historical facts. Examples of these statements include,
but are not limited to, statements regarding the Company`s expectations of the
dollar amount to be raised in the proposed offering, the Company`s ability to
complete the proposed offering, and the Company`s expectations for the use of
proceeds from the proposed offering. These forward-looking statements involve a
number of risks and uncertainties. Among the important factors that could cause
actual results to differ materially from those indicated in such forward-looking
statements include market conditions for corporate debt generally, for the
securities of telecommunications companies and for the Company`s indebtedness in
particular. For other important factors that may cause actual results to differ
materially from those indicated in our forward-looking statements, we refer you
to the information contained in Item 1A of the Form 10-Q for the quarter ended
March 31, 2009 under the caption "Risk Factors" and in other filings we make
with the Securities and Exchange Commission. We undertake no obligation to
update the information contained in this press release to reflect subsequently
occurring events or circumstances.

American Tower Corporation
Michael Powell, 617-375-7500
Vice President, Investor Relations

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