Known as "The Rock," what famous prison housed infamous inmates such as Al Capone, "Machine Gun" Kelly and Alvin "Creepy" Karpis?
- Sing Sing
In the 29 years it was open, 36 prisoners made 14 escape attempts from Alcatraz, including 1962's notorious "Escape from Alcatraz" by Frank Morris, John Anglin, and Clarence Anglin. Source: Federal Bureau of Prisons
- The ADX
- San Quentin