Changuu Island (known more commonly as Prison Island) was the location where slaves were detained and held until they were transported to places in the Middle East or Europe.
After that, the island was transformed into a quarantine center where people with deadly diseases were left, so they wouldn’t spread their illnesses with the healthy.
Today, the island is a nature reserve, and a beautiful place to spend the day when you visit Stone Town, Zanzibar.
You will get the opportunity to visit the tortoise sanctuary, which contains a large colony of giant tortoise imported from the Seychelles in the late 19th century. The average weight of these creatures is 200 kg, and many of them are said to be over 150 years old. There will be a chance to touch the tortoise and take photos. The island is also a 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.