Elmina Castle, Ghana: Elmina Castle was built by the Portuguese in 1482 as a trade settlement.
Port Arthur, Australia: Located on the Tasman Peninsula, Port Arthur served as a convict colony for the British Empire starting from 1833.
Devil’s Island, French Guiana: Devil’s Island, or the penal colony of Cayenne was a prison that operated from 1852.
Chateau d’If, France: Chateau d’If was originally a fortress which became a prison in the mid 17th century.
House of Slaves, Goree Island, Senegal: The House of Slaves (or Maison des Esclaves) was used until 1848 to hold African slaves before they were shipped away from Africa.
Kilmainham Gaol, Ireland: Kilmainham Gaol was built in 1796 and was used as a prison until 1924.
Robben Island, South Africa: Robben Island is a small island of the shores of Cape Town.
Hanoi Hilton, Vietnam: The Hoa Loa prison in Hanoi was built by France at the end of the 19th century to hold Vietnamese prisoners of political nature.
Tower of London, England: The Tower of London is a historic castle on the north bank of the River Thames.
Alcatraz Island, California: The small island of Alcatraz in front of San Francisco‘s Fisherman’s Wharf was the site of the first lighthouse in the Western United States.