Exhibit 23.4

                        Consent of Independent Auditors

We consent to the incorporation by reference in the Registration  Statement
(Form S-8 No. 333-72927) of American Tower Corporation  of our reports dated
April 1, 1999 with respect to the financial statements of TeleCom Towers, LLC as
of December 31, 1998 and 1997 and for the  year ended December 31, 1998 and the
period from September 30, 1997 (inception) to December 31, 1997 and the
financial statements of TeleCom Towers Mid-Atlantic, LP, TeleCom Towers of the
West, LP and TeleCom Southwest Towers, LP as of July 31, 1998 and December
31, 1997 and for the seven months ended July 31, 1998 and the year ended
December 31, 1997 included in this Form 8-K.

                                             /s/ Ernst & Young LLP

Vienna, Virginia
September 15, 1999