On March 21, 1963, Alcatraz Prison, known as “The Rock or “”America’s Devil Island”, in San Francisco Bay closes down and transfers its last prisoners. At it’s peak period of use in 1950s, Alcatraz housed over 200 inmates at the maximum-security facility. It remains an icon of American prisons for its harsh conditions and record for being inescapable. In 1972 Alcatraz became a national recreation area and received designation as a National Historic Landmark in 1986. Today, the island’s facilities are operated by the National Park Service as part of the Golden Gate National Recreation Area.