Alcatraz Federal Penitentiary terraced garden and greenhouse. The mansion had tall windows, providing fine views of San Francisco Bay. Today, the house is a ruin, burned down by Native Americans during the Occupation of Alcatraz on June 1, 1970. Building 64 Residential Apartments was the first building constructed on the island of Alcatraz, intended entirely for the purpose of accommodating the military officers and their families living on the island. Located next to the dock on the southeastern side of the island, below the Warden's House, the three-story apartment block was built in 1905 on the site of a U.S. Army barracks which
Alcatraz Citadel Grounds were located in the left centre. When the new concrete prison was built in 1910-2, iron staircases in the interior were retained from the old citadel and massive granite blocks originally used as gun mounts were reused as the wharf's bulkheads and retaining walls. Alcatraz Citadel Alcatraz Citadel, also known as Fort Alcatraz, was the original military defense and prison on Alcatraz Island, off the coast of San Francisco, California, United States. The citadel was built in 1859 as a U.S. Army military defense, and began function as a war camp in 1861 and long-term military prison in 1868.