Location: Atlanta, Ga.
Year opened: 1902
Inmate population:2,500
Facts: Until Boulder Dam was built in 1932, Atlanta Federal Penitentiary was the largest cement mass in America. In 1920 inmate Eugene V. Debs ran for president of the United States from his jail cell, and won 3.5 percent of the vote. His sentence was commuted a year later, on Christmas Day, by President Warren G. Harding. In 1931, Al Capone began to serve his sentence for tax evasion at Atlanta Federal Penitentiary.