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
Legends of Alcatraz Karpis is said to haunt the prison bakery and kitchen. One visitor and his wife have claimed to have heard canaries singing in what was the cell of Robert Stroud, the "Birdman of Alcatraz", and to have seen him on the bed reading a book, yet Stroud was never permitted to keep birds in his cell as he'd done at former prisons. Numerous investigators and psychics such as Annette Martin and Jeanne Borgen and paranormal teams have sought to "contact spirits" at Alcatraz. KGO Radio Morning News anchor Ted Wygant, a skeptic of the paranormal, visited Alcatraz in 1982 with