On a hill overlooking the inner city, this is Jo'burg's answer to Cape Town's popular Robben Island attraction, and is billed as a living tribute to the country's enshrined freedoms and human rights, housing South Africa's architecturally provocative Constitutional Court, where you can view artworks or -- in the spirit of transparency -- even attend court hearings. Like Robben Island, this is the site of a prison -- the notorious 19th-century Old Fort, where brutalities of the worst kind were perpetrated on innocents in the name of apartheid; both Nelson Mandela and Mahatma Gandhi were detained here. The guided tour includes Number Four, the scene of much human torture and now replaced by an exhibition that attempts to unearth the notion of criminality. A work in progress, Constitution Hill centers on Constitution Square, a central piazza, where you'll find two stairwells that belonged to the original "Awaiting Trial Block" of the prison; a wall here is filled with a range of comments made by South Africans as the country attained freedom. Tours (90 min.) depart every hour, but I recommend the private tour (R40).