Other examples of co-located towers on mountain peaks in the United States are on Red Mountain in Birmingham , Alabama ; Mount Wilson near Los Angeles ; the Sutro Tower in Clarendon Heights near Mount Sutro in San Francisco ; Lookout Mountain , Colorado near Denver ; Cedar Hill between Dallas and Fort Worth ; South Mountain Park near Phoenix ; Nelson Peak near Salt Lake City ; Sandia Crest near Albuquerque , New Mexico . Probably the most famous broadcast antenna farm of all is the World Trade Center Tower One , on which many of the New York City television and several FM stations had their antennas . All were lost when Twin Towers One and Two collapsed after the September 11 attacks in 2001 . Most of those stations reverted to broadcasting from their previous home , 200 feet lower , on the Empire State Building
September 11 attacks
September 11 attacks
Antenna farm