Constitution Hill

Johannesburg is a relatively new city.  Though In central Johannesburg,  one of the oldest structures, the Old Fort,  was built at the end of the 19th century.  For most of its life, until it closed in 1983, the grounds served as a prison.  First as a place to confine war prisoners, then gradually to a more ominous history during the apartheid period.  It was a place where both Mahatma Gandhi and later Nelson Mandela were held.  Today, it’s preserved as a museum and you can walk in the formerly overcrowded cells, including Mandela’s.