The Custom House Tower is a turn of the century skyscraper in the Financial District neighborhood of Boston, Massachusetts. Built in 1915, it was 151 m (496 ft) tall, easily Boston's tallest building until the 1947 John Hancock Tower which is just one foot shorter. Both were trumped by the 1964 construction of the Prudential Tower. The building has 32 floors and was recently converted into a Marriott hotel.