Alcatraz Federal Penitentiary closes.

Alcatraz Federal Penitentiary

Former island prison in San Francisco Bay

United States Penitentiary, Alcatraz Island, also known simply as Alcatraz or the Rock, was a maximum security federal prison on Alcatraz Island, 1.25 miles off the coast of San Francisco, California, United States. The site of a fort since the 1850s, the main prison building…