San Francisco Bay is the artificial and flat Treasure Island, site of the 1939 Golden Gate International Exposition. From the Second World War until the 1990s, both islands served as military bases and are now being redeveloped. Isolated in the center of the Bay is Alcatraz, the site of the famous federal penitentiary. The federal prison on Alcatraz Island no longer functions, but the complex is a popular tourist site. Despite its name, Mare Island in the northern part of the bay is a peninsula rather than an island. San Francisco Bay is thought to represent a down-warping of the Earth's crust between
Alcatraz Morgue Alcatraz Morgue Alcatraz Morgue is the morgue on Alcatraz Island, off the coast of San Francisco, California, United States. It is located on the northwestern side of the island towards the centre, halfway between the Alcatraz Water Tower and the Dining Hall, below the side of the Recreation Yard. The morgue was built in 1910 by the U.S. military on a site which was formerly the entrance to a tunnel which was used by soldiers from the 1870s to cross to the opposite side of the island. It is described as "one of the simplest expressions of the mission revival