Tower 270 (also known as 270 Broadway, Arthur Levitt State Office Building, 80 Chambers Street, and 86 Chambers Street) is a 28-story mixed use building in the Civic Center and Tribeca neighborhoods of Manhattan, New York City. Completed in 1930 to designs by E.H. Faile & Company, it has 350,785 square feet (32,589.0 m2) of floor space, on a plot with 50 feet (15 m) facing Broadway to the east and 242 feet (74 m) on Chambers Street to the north. It housed the first headquarters of the Manhattan Project in 1942–43.