Zanzibar Prison Island Tour
Overview
Zanzibar, an archipelago off the coast of Tanzania, is renowned for its stunning beaches, rich cultural heritage, and vibrant history. Among its most fascinating attractions is the famous Prison Island, also known as Changuu Island. Located just a short boat ride from Stone Town, the heart of Zanzibar, Prison Island offers visitors a unique blend of history, wildlife, and natural beauty. The Prison Island Tour is one of the most popular excursions for those seeking to experience the many layers of Zanzibar’s intriguing past and its picturesque surroundings.
Prison Island earned its name from the prison complex built there in the late 19th century. Initially intended as a prison for rebellious slaves, the facility was quickly repurposed as a quarantine station for yellow fever cases. Today, the island stands as a symbol of Zanzibar’s colonial and slave trade history, while also serving as a sanctuary for endangered Aldabra giant tortoises and a haven for those seeking relaxation away from the bustling streets of Stone Town

What to Expect on the Zanzibar Prison Island Tour
1. Boat Ride from Stone Town
Your Prison Island Tour usually begins in Stone Town, a UNESCO World Heritage site, teeming with culture, markets, and Swahili architecture. From here, you’ll embark on a scenic boat ride across crystal-clear turquoise waters towards Prison Island. The journey, typically lasting about 20–30 minutes, offers panoramic views of the coastline, making it a prime opportunity to take beautiful photos and soak in the fresh ocean breeze. Skilled boat captains guide you across the gentle waves, setting the perfect tone for a day of adventure and discovery.
2. Arrival and Welcome to Changuu Island
Stepping foot onto Prison Island, visitors are welcomed by the sight of lush gardens and the impressive historic prison buildings. The island is relatively small, making it easy to explore on foot. Your guide, often a knowledgeable local, will give an introduction to the island’s multifaceted history, its significance in the Indian Ocean’s slave and colonial eras, and the evolution of its use over time.
3. Discover the Historic Prison Complex
One of the main highlights of the tour is a guided exploration of the old prison buildings. Though never used as a prison for local criminals, the robust stone structures remain an enduring reminder of Zanzibar’s tumultuous history. As you walk through the echoing halls and gaze at the thick stone walls, your guide recounts stories of how the island was transformed into a quarantine station and a place for containing outbreaks, particularly yellow fever, during the British colonial period.
Inside, you might view cells, administration offices, and even some original architectural features. Information boards and photographs help paint a vivid picture of the island’s past. The deeply evocative atmosphere offers visitors an opportunity to reflect on the broader history of slavery, colonialism, and disease control in East Africa.
4. Meet the Aldabra Giant Tortoises
Another unique feature of Prison Island is its population of Aldabra giant tortoises. Originally gifted to Zanzibar by the British governor of the Seychelles in the late 19th century, these gentle reptiles have thrived in their sanctuary on Changuu Island. Some of the tortoises are more than 150 years old, making them some of the longest-living creatures on the planet!
Visitors are allowed to interact with the tortoises under the supervision of the island’s caretakers. You can feed them, observe them up close, and take memorable photographs. The conservation efforts on the island aim to protect this endangered species, making the experience both enjoyable and educational.
5. Exploring Nature and Wildlife
Beyond the tortoises, Prison Island boasts an array of natural delights. The island is home to peacocks, a variety of birds, and colorful butterflies. Guided nature walks through the forested areas allow you to appreciate the diverse flora and fauna, as well as the beautiful viewpoints overlooking the Indian Ocean.
The coastline itself is breathtaking, with stretches of soft white sand, rocky outcrops, and clear blue water. The tranquil environment offers the perfect escape from the busy atmosphere of Stone Town.
6. Snorkeling and Swimming
Most Prison Island tours include time for relaxation and water-based activities. The warm, shallow waters surrounding the island are excellent for swimming and snorkeling. Coral reefs off the shore are easily accessible, offering snorkelers a chance to encounter a vibrant underwater world filled with colorful fish and other marine life.
Sandy beaches invite visitors to sunbathe or simply enjoy the peaceful ambiance. For those who prefer a leisurely stroll, walking along the island’s shoreline is a great way to take in the scenery and perhaps spot some sea creatures in the tidal pools.
7. Relax and Enjoy Local Cuisine
Some Prison Island tours provide options for lunch or refreshments at local beachside restaurants or picnic spots. Fresh seafood, tropical fruits, and other delicacies offer a taste of Zanzibar’s renowned cuisine. Dining with a view of the Indian Ocean, surrounded by sounds of nature, is a highlight for many travelers.
8. Return to Stone Town
As the tour concludes, your boat captain will take you back to Stone Town. The return journey is typically relaxed, giving you time to reflect on your experiences. Many visitors find the transition from the calm of Prison Island to the lively streets of Stone Town to be a fascinating contrast.
Tips for Prison Island Tour Visitors
- Dress Comfortably: Light, comfortable clothing, a hat, and sunscreen are recommended.
- Bring Swimwear: If you plan to swim or snorkel, don’t forget your swimming gear and a towel.
- Stay Hydrated: Carry water with you, especially if you’re visiting during the hotter months.
- Respect the Tortoises: Always handle the tortoises gently and follow the instructions of caretakers.
- Bring a Camera: The stunning views and unique wildlife make for excellent photo opportunities.
