The prison was built in 1893 and was originally intended to house violent prisoners from the mainland and sick people.
You will get the opportunity to visit the tortoise sanctuary, which contains a large colony of giant tortoise imported from Seychelles in the late 19th century. The average weight of these creatures is 200 kg, and many of them are said to be over 180 years old. There will be a chance to touch the tortoise and take photos.
The island is also home to a colony of beautiful peacocks. For the rest of the trip, you can either enjoy the marine life as you snorkel around the coral that fringes Prison Island or just relax under the warm glow of the sun until you head back to Stone Town.