Top 10 most infamous prisons in the world – Nelson Mandela was locked in #5 for 27years (With Pictures)

7. Port Arthur, Australia

Located on the Tasman Peninsula, Port Arthur served as a convict colony for the British Empire starting from 1833. Port Arthur Penitentiary was eventually abandoned in 1877, and today it is one of Australia’s most significant heritage areas and an open-air museum, as well as a UNESCO World Heritage Site