Located at the top of the Cape Peninsula, Cape Town is probably the most popular destination in South Africa. Overlooking Cape Town is the prominent landmark of Table Mountain. Table Mountain is a level plateau with steep cliffs surrounding it which resembles a table. Frequently covered in clouds, these appear to hang over the edge of the mountain like a table cloth. There are some great beaches around Cape Town. Beaches on the Atlantic Coast have much cooler water than on the Indian Ocean Coast, with up to a 10 degree temperature difference. A short ferry ride away is Robben Island which served as a maximum security prison up until 1991, and is now a museum.