Zanzibar consists of the main island of Unguja (also called 'Zanzibar'), Pemba and several smaller islands. From North to South it is 95 km, and the islands are situated 35 km from the mainland. Zanzibar is also known as the Spice Islands and is world famous for its production of cloves. From the exotic Stone Town, with its fascinating labyrinth of narrow streets and palm trees, the island provides a change of atmosphere and a more relaxed life than on the Tanzania mainland. One can visit the House of Wonder, the Old Fortress or the Cathedral which is built over the old slave market. There is a boat trip to Prison Island - also known for its large land turtles. In the evening you can stroll through the Foradani food market.