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Visiting Prison Island: Tortoises & History

by Bongo Trips / Thursday, 20 November 2025 / Published in Zanzibar Guide
Visiting Prison Island: Tortoises & History

Visiting Prison Island: Tortoises & History

Zanzibar is famous for its beaches, spice farms, and vibrant culture. But just off its coast lies a fascinating destination rich in history and wildlife: Prison Island. Also known as Changuu Island, this small island offers visitors a unique combination of historical significance, breathtaking views, and the chance to encounter some of the world’s oldest giant tortoises. A trip to Prison Island is perfect for history buffs, wildlife enthusiasts, and travelers looking for a day adventure from Stone Town.

With Bongo Trips, you can plan a seamless excursion to Prison Island, combining sightseeing, wildlife encounters, and relaxation.

The History of Prison Island

Prison Island earned its name in the late 19th century when it was used as a detention center for rebellious slaves. Though it was never heavily populated as a prison, its historical ruins and old quarantine buildings reflect Zanzibar’s complex past. Visitors can explore the stone buildings, learn about the island’s role in trade and colonial history, and gain insight into Zanzibar’s social and political heritage.

Besides, Walking among the ruins provides a glimpse into the island’s layered history and makes for an educational experience that complements the natural attractions.

Meet the Giant Tortoises

One of Prison Island’s most famous residents is its population of Aldabra giant tortoises, some of which are over a century old. These gentle giants were brought to the island in the late 19th century and are now a major attraction for visitors.

Walking through the tortoise sanctuary, you can observe these fascinating creatures up close, feed them under supervision, and learn about conservation efforts aimed at protecting them. Children and adults alike often find the tortoises both endearing and awe-inspiring, making it a highlight of the trip.

Activities on Prison Island

Snorkeling and Swimming

Although, Prison Island is surrounded by clear, turquoise waters, making it ideal for snorkeling and swimming. Colorful coral reefs and tropical fish can be explored near the island’s shoreline, offering a small but delightful underwater adventure.

Guided Tours

Likewise, Local guides provide tours of the island, sharing historical facts. Stories of Zanzibar’s past, and information about the tortoises and the surrounding marine ecosystem. Guided tours are highly recommended to enrich your visit and gain deeper understanding of the island’s significance.

Photography and Relaxation

The island’s scenic beaches and historical ruins provide fantastic photo opportunities. Besides the Visitors can relax under palm trees, take a stroll along the beach, or capture sunset views over the Indian Ocean.

Tips for Visiting Prison Island

  • Book Your Trip in Advance: Boats depart from Stone Town’s harbor, and planning ahead ensures availability.
  • Wear Comfortable Shoes: Exploring ruins and walking around the island is easier with sturdy footwear.
  • Bring Sun Protection: Hats, sunscreen, and sunglasses are essential for sunny days.
  • Carry Snacks and Water: While some tours provide refreshments, it’s good to stay hydrated.
  • Respect Wildlife: Do not disturb the tortoises or the natural environment.

Plan Your Prison Island Excursion with Bongo Trips

Visiting Prison Island is a unique way to combine history, wildlife, and coastal beauty in a single trip. With Bongo Trips, you can enjoy a guided tour, arrange boat transfers, and ensure a smooth, enjoyable experience. Whether you’re traveling solo, with family, or as a couple, Prison Island offers an unforgettable day trip from Zanzibar.

For bookings or customized Prison Island tours, contact us at [email protected]. or WhatsApp +255 752 213 715.

What you can read next

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Street Food in Zanzibar: What to Try

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