Pier 57 is a long pier built on floating concrete caissons in the Hudson River in Manhattan, New York City. Built in 1952, it is located near the end of 15th Street on the West Side Highway, just south of the Chelsea Piers sports complex.
Bus garage :
Until 2003, Pier 57 housed the Hudson Pier Depot for the New York City Transit Authority (NYCTA).
Detention center :
About one year after the NYCTA vacated the pier, Pier 57 was temporarily utilized as a detention center during the 2004 Republican National Convention, when approximately 1,200 anti-RNC protesters were arrested and sent to a makeshift detention/processing center at Pier 57. Over 1,800 were arrested during the entire event. Medical activists reportedly treated many people held at Pier 57 for chemical burns, rashes, and infections that resulted from direct, prolonged exposure to the motor oil, asbestos, and other contaminants from its days as a bus garage.