
Visiting Prison Island in Zanzibar offers a fascinating combination of history, wildlife, tropical scenery and Indian Ocean adventure just off the coast of Stone Town. Officially known as Changuu Island, this small island is one of Zanzibar’s popular excursions and is particularly famous for its population of Aldabra giant tortoises.
The journey begins with a scenic boat ride from the Stone Town waterfront across the turquoise waters of the Indian Ocean. As Zanzibar’s historic skyline slowly disappears behind you, the island comes into view, surrounded by beautiful blue water and tropical coastal scenery.
Despite the name Prison Island, the island’s story is more complicated than its title suggests. Structures were developed for detention purposes during Zanzibar’s colonial period, while the island was later associated with quarantine arrangements. Today, visitors can explore parts of this historical heritage while learning about the different roles the island has played over time.
With Tansania Toll Safaris, a Prison Island tour can be enjoyed as a half day excursion or combined with Stone Town and other Zanzibar activities as part of a personalized Tanzania safari and Zanzibar beach holiday.
Highlights of visiting Prison Island include:
Although Changuu Island is relatively small, visitors can experience several interesting attractions during the excursion.
Giant Tortoise Sanctuary
The Aldabra giant tortoises are the most famous residents of Prison Island. Some individuals can live for well over a century, making an encounter with these remarkable reptiles one of the most memorable wildlife experiences available near Stone Town.
Visitors can observe the tortoises while learning about their history, conservation and characteristics. Guests should always follow local guidance and treat the animals respectfully.
Historical Prison Buildings
The island contains historical structures connected with its colonial past. A guided walk introduces visitors to the story behind the name Prison Island and explains how the island’s intended and later functions changed through different periods of Zanzibar’s history.
Quarantine Heritage
Changuu was also associated with quarantine facilities during a period when Zanzibar was an important Indian Ocean trading center. Learning about this history provides another perspective on the island’s role in regional maritime connections.
Beaches and Coastal Areas
The coastline surrounding Prison Island provides attractive views across the Indian Ocean and toward Zanzibar. Depending on tides, weather and your selected itinerary, there may be opportunities for relaxation and enjoying the coastal environment.
Stone Town Waterfront
Most Prison Island excursions begin and finish around the Stone Town waterfront, making it easy to combine the island with a Stone Town walking tour, historical exploration or evening visit to Forodhani Gardens.
A Prison Island tour from Stone Town is one of the more convenient excursions available to travelers staying in Zanzibar City. The island is reached by boat, with the journey generally taking around 20 to 30 minutes, depending on the departure point, vessel and sea conditions.
The complete experience can normally be arranged within a few hours, making it suitable for travelers with limited time.
Typical experience options include:
Travelers staying outside Stone Town can be transferred by road to the boat departure area before beginning the excursion.
Comfortable lightweight clothing, sun protection, suitable footwear, drinking water and a camera are recommended. Guests planning to swim or participate in additional marine activities should also bring swimwear and a towel.
Your Prison Island Zanzibar tour normally begins with collection from your accommodation or a meeting point around Stone Town. You then make your way toward the waterfront, where you meet the boat crew and receive essential information about the journey.
The boat departs across the Indian Ocean toward Changuu Island. During the crossing, you can enjoy views of traditional boats, the Stone Town coastline and the brilliant colors of Zanzibar’s surrounding waters.
Upon reaching the island, your guided exploration begins. One of the first highlights is normally the giant tortoise sanctuary, where you can observe these extraordinary animals at close range while learning about their characteristics and conservation.
The experience can then continue through the island’s historical areas. Your guide explains the origins of the prison structures, Zanzibar’s colonial history and the later use of the island for quarantine purposes.
After exploring the historical sites, there may be time to enjoy the coastline, take photographs or simply relax while looking across the Indian Ocean. Depending on the itinerary, tides and sea conditions, selected programs may also include additional swimming or snorkeling opportunities.
You then board the boat for the return journey to Stone Town, where you can continue exploring Zanzibar or transfer back to your accommodation.
Activities during the excursion may include:
Just beyond Stone Town’s historic waterfront lies an island where giant tortoises, colonial history and the turquoise Indian Ocean come together in one memorable Zanzibar excursion.
For travelers searching for a Prison Island Zanzibar tour, Changuu Island tour, giant tortoise experience in Zanzibar, Stone Town boat trips, Zanzibar historical tours or things to do in Zanzibar, Prison Island provides an excellent combination of wildlife, history and tropical scenery.
Based in Arusha, Tanzania, Tansania Toll Safaris creates personalized journeys that connect Tanzania’s legendary mainland safari destinations with the history, beaches and marine adventures of Zanzibar.
Why visit Prison Island with Tansania Toll Safaris:
Leave Stone Town’s winding streets behind and sail across the turquoise Indian Ocean toward one of Zanzibar’s most intriguing islands. Meet the giant tortoises, uncover the stories of Changuu Island and experience another fascinating side of Zanzibar with Tansania Toll Safaris.
Your dream of exploring Tanzania can begin with one simple conversation. Tell us when you would like to travel, how many people will join you and the experiences you hope to enjoy. Our safari specialists will prepare a personalized Tanzania travel proposal based on your interests, preferred accommodation, travel duration and budget. Whether you are planning a Serengeti wildlife safari, a Kilimanjaro climbing adventure, a romantic honeymoon, a family holiday or a complete Tanzania safari and Zanzibar beach experience, we are ready to guide you through every step of the planning process. Contact Tansania Toll Safaris today and begin creating a journey filled with wildlife, discovery, comfort and unforgettable African moments.

