Alcatraz opened for business as a federal prison today in 1934, and was in use for 29 years. Some of the criminals jailed there were Al Capone, Robert Stroud (the birdman of Alcatraz), George "Machine Gun" Kelly, Mickey Cohen and Alvin Karpis.
The Rock or Alcatraz Island is located in the San Francisco Bay and has served as a lighthouse, military fortification, a military prison and a federal prison. Today The Rock is a historic site operated by the National Park Service and is open for tours. The Rock has been featured in many movies, TV shows, cartoons, books, games and comics.