One Liberty Plaza is a skyscraper in Manhattan, New York, which resides at the location of the former Singer Building (in 1968, the second tallest building to be demolished). One Liberty Plaza is currently owned and operated by Brookfield Properties. The building is 743 feet (226 m) high and 54 floors. It was built in 1973. At 2.2 million square feet (204,000 square meter), each floor offers almost one acre (4,046 square meter) of office space. Indeed, it is one of the largest office buildings in New York.
Its facade is black, consisting of a sculptural steel frame. The building was originally commissioned by U.S. Steel. Currently, a variety of tenants occupy the space, from large law firms to public and not-for-profit agencies like the Lower Manhattan Development Corporation and the World Trade Center Memorial Foundation.
The building is bordered by Broadway, Cortlandt Street, Church Street, and Liberty Plaza.
The building had a large and substantial renovation in 1989 which involved the creation of a new lobby and elevator system. The lobby and elevators have an extensive security system, and the building has a currently unused connection to the New York City Subway in the basement.
The building sits next to the former World Trade Center site. Following the events of September 11, 2001, the building was so damaged that engineers feared its collapse.
As of 2006, it is the 188th tallest building in the world.