Martin Tower was a 21-story, 101.2 m (332 ft) building at 1170 8th Avenue in Bethlehem, Pennsylvania. It was the tallest building in the city as well as the greater Lehigh Valley—8 ft (2.4 m) taller than the PPL Building in Allentown. Martin Tower was listed on the National Register of Historic Places on June 28, 2010. Originally built as the headquarters of now-defunct Bethlehem Steel, the building, which once dominated the city's skyline when completed in 1972, stood vacant from 2007 until its eventual demolition on May 19, 2019 at 7:03 AM EDT.