A visit to Stone Town reveals the captivating Prison Island, a tranquil retreat steeped in history and natural beauty. The island is home to Aldabra tortoises, brought from the Seychelles in 1919, and they wander freely across the land. Just half an hour from Stone Town, it offers a perfect spot for snorkeling in its crystal-clear waters and relaxing on its serene shores.

Prison Island also holds significant historical value. Originally used as a quarantine station, the British later constructed a prison there in the 1890s. However, the prison was never actually used. Today, visitors can explore the remnants of the prison, along with the lush landscapes that make this island a popular destination for both history enthusiasts and nature lovers.