Alcatraz Island 1906 San Francisco earthquake, civilian prisoners were transferred to Alcatraz for safe confinement. On March 21, 1907, Alcatraz was officially designated as the Western U.S. Military Prison, later Pacific Branch, U.S. Disciplinary Barracks, 1915. In 1909 construction began on the huge concrete main cell block, designed by Major Reuben Turner, which remains the island's dominant feature. It was completed in 1912. To accommodate the new cell block, the Citadel, a three-story barracks, was demolished down to the first floor, which was actually below ground level. The building had been constructed in an excavated pit (creating a dry "moat") to enhance
Alcatraz Dining Hall (1994), which has a scene spoofing the dining room scenes of the 1979 film. Alcatraz Dining Hall Alcatraz Dining Hall, often referred to as the Mess Hall, is the dining hall of Alcatraz Federal Penitentiary where the prisoners and staff ate their meals. It is a long wing on the west end of the Main Cellhouse of Alcatraz, situated in the center of the island. It is connected to the block by a corridor known as “Times Square”, as it passes beneath a large clock approaching the entrance way to the dining hall. This wing includes the dining hall and