The most notorious prison in America, and perhaps even the world, Alcatraz was home to the country's most dangerous criminals between 1934 and 1963. Famous inmates include Al Capone, George 'Machine Gun' Kelly, and 'Creepy' Alvin Karpis, the first official public enemy number one. Prisoners were entitled to food, clothes, shelter, medical care, legal representation, letters to family members, and religious services. Everything else had to be earned.

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America's most fascinating National Historic Landmarks you should visit