Alcatraz Island

3d model of Alcatraz Island in San Francisco, California, United States. Alcatraz Island is located in San Francisco Bay, 1.25 miles (2.01 km) offshore from San Francisco, California, United States. The small island was developed with facilities for a lighthouse, a military fortification, a military prison, and a federal prison, the latter operated from August 11, 1934 until March 21, 1963. Since the late 20th century, it has become a major tourist attraction. (Wikipedia)