Alcatraz Island
A former federal prison on a rocky island in San Francisco Bay, famous for escape attempts and enduring legends.
What is documented
Alcatraz served as a federal penitentiary from 1934 to 1963 after earlier military use. It held some of the best-known federal prisoners of its era.
The legend / reported claims
Stories of eerie sounds and apparitions are widely associated with the former prison. They are cultural claims rather than verified evidence of paranormal activity.