Prison Island, also known as Changuu Island. It is the central island, of the three visible from Stone Town. It takes about 30 minutes to get there by a wooden, motor-powered boat. The prison on this island was built in 1893, and was later used as a quarantine hospital. Note that the only interesting part of this island is seeing the giant turtles which were brought from the Seychelles by Sultan Said in the 1820s. One can also swim, snorkel, enjoy sunbathing or just relax and enjoy the calm that this beautiful island can offer. Lunch not included. Possibility of lunch in the restaurant located on the prison island.