Prison Island Zanzibar: The Complete Travel Guide & Day Trip
Prison Island Zanzibar is one of the most popular day-trip destinations in Zanzibar, offering visitors a perfect blend of history, nature, wildlife, and breathtaking coastal scenery. Located just a short boat ride from Stone Town, this beautiful island—also known as Changuu Island—is famous for its giant Aldabra tortoises, historic prison buildings, white-sand beaches, and crystal-clear turquoise waters.
Whether you’re interested in learning about Zanzibar’s rich history, meeting some of the world’s oldest tortoises, snorkeling among colorful coral reefs, or simply relaxing by the Indian Ocean, Prison Island has something for every traveler.
At Tanzania Crown Safaris, we offer professionally guided Prison Island tours that combine history, adventure, and relaxation. Our experienced local guides ensure you enjoy every moment of your visit while sharing fascinating stories about the island’s past and its unique wildlife.
Whether you’re visiting Zanzibar after a Tanzania safari, climbing Mount Kilimanjaro, or enjoying a beach holiday, a trip to Prison Island is an unforgettable experience that perfectly complements your island adventure.
What Is Prison Island?
Prison Island, officially known as Changuu Island, is a small tropical island located approximately 5.6 kilometers (3.5 miles) northwest of Stone Town, the historic capital of Zanzibar.
Despite its name, the island never served as a functioning prison for criminals. Instead, it was originally intended to house rebellious slaves before later being used as a quarantine station for people arriving with contagious diseases such as yellow fever.
Today, Prison Island is a peaceful tourist destination renowned for its historical landmarks, giant tortoise sanctuary, snorkeling opportunities, and stunning ocean views.
The island’s calm atmosphere, fascinating history, and natural beauty make it one of Zanzibar’s must-visit attractions.
Why Is It Called Prison Island?
The name Prison Island comes from a prison complex that was constructed on the island in the late 19th century during British rule.
Although the prison building was completed, it was never used to house prisoners as originally intended. Instead, it became a quarantine station where travelers arriving in Zanzibar were isolated if they were suspected of carrying infectious diseases.
Today, visitors can walk through the preserved buildings and learn about this interesting chapter of Zanzibar’s history while enjoying spectacular views of the Indian Ocean.
Where Is Prison Island Located?
Prison Island lies just off the coast of Stone Town and is easily accessible by traditional wooden dhow boats or modern motorboats.
The journey typically takes around 20–30 minutes, making it one of the easiest and most enjoyable excursions from Stone Town.
Its convenient location allows visitors to combine a Prison Island tour with other popular Zanzibar attractions, including:
- Stone Town Walking Tour
- Nakupenda Sandbank
- Spice Farm Tour
- Jozani Forest National Park
- Sunset Dhow Cruise
The History of Prison Island
Prison Island has a fascinating history dating back to the 19th century.
Originally owned by an Arab merchant, the island was later purchased by the British colonial administration. Plans were made to build a prison for rebellious slaves, but the facility was never used for that purpose.
Instead, the buildings became a quarantine station where travelers entering Zanzibar were monitored before being allowed onto the main island.
Walking through the old stone buildings today offers visitors a glimpse into Zanzibar’s colonial past and the island’s role in protecting public health during that era.
The well-preserved architecture remains one of Prison Island’s most significant historical attractions.
Why Visit Prison Island?
A visit to Prison Island offers much more than a simple boat excursion.
The island combines history, wildlife, marine life, and breathtaking scenery into one unforgettable experience.
Highlights of Prison Island
- Meet giant Aldabra tortoises
- Explore historic prison buildings
- Learn about Zanzibar’s colonial history
- Snorkel among colorful coral reefs
- Swim in crystal-clear waters
- Relax on white-sand beaches
- Enjoy panoramic views of the Indian Ocean
- Take incredible travel photographs
- Experience a peaceful escape from Stone Town
Prison Island is suitable for solo travelers, couples, families, honeymooners, and groups looking for a memorable Zanzibar excursion.
Meet the Giant Aldabra Tortoises
One of the island’s biggest attractions is its population of giant Aldabra tortoises.
These remarkable creatures were originally gifted to Zanzibar in the early 20th century and have since become one of the island’s most treasured residents.
Some tortoises are believed to be well over 100 years old, while others continue to breed successfully under conservation programs.
Visitors can observe them up close, learn about their conservation, and capture unforgettable photographs.
Watching these gentle giants slowly roam beneath the shade of tropical trees is one of the highlights of any Prison Island tour.
Crystal-Clear Waters and Snorkeling
The waters surrounding Prison Island are incredibly clear and rich in marine life.
Colorful coral reefs provide excellent snorkeling opportunities for both beginners and experienced swimmers.
While exploring beneath the surface, you may encounter:
- Tropical reef fish
- Starfish
- Sea urchins
- Soft and hard corals
- Angelfish
- Butterflyfish
- Parrotfish
- Moorish idols
The calm, warm waters make snorkeling one of the most enjoyable activities during your visit.
Beautiful Beaches and Relaxation
Beyond its history and wildlife, Prison Island is also a wonderful place to relax.
Visitors can spend time:
- Walking along the shoreline
- Swimming in the warm Indian Ocean
- Enjoying the sea breeze
- Sunbathing on white-sand beaches
- Taking in panoramic ocean views
The peaceful atmosphere makes the island a perfect escape from the busy streets of Stone Town.
Why Choose Tanzania Crown Safaris?
At Tanzania Crown Safaris, we believe every journey should be memorable, comfortable, and enriching.
Our Prison Island tours include knowledgeable local guides who share the island’s fascinating history, wildlife, and cultural significance while ensuring a smooth and enjoyable experience.
Whether you’re planning a standalone Zanzibar excursion or combining your island adventure with a Tanzania safari or Mount Kilimanjaro climb, we can create a personalized itinerary to suit your travel style and interests.
Join Tanzania Crown Safaris and discover why Prison Island remains one of Zanzibar’s most captivating destinations.
Things to Do on Prison Island Zanzibar
A visit to Prison Island Zanzibar offers much more than a scenic boat ride. The island is filled with fascinating history, unique wildlife, beautiful beaches, and vibrant marine life, making it one of the most rewarding day trips in Zanzibar.
Whether you’re a history enthusiast, a nature lover, or simply looking to relax by the Indian Ocean, Prison Island has something for everyone.
Your Prison Island Day Trip Itinerary
Morning Departure from Stone Town
Your adventure begins in the historic Stone Town, where your guide from Tanzania Crown Safaris will meet you before escorting you to the harbor.
Board a traditional wooden dhow or a comfortable motorboat for the short journey across the turquoise waters of the Indian Ocean.
The boat ride takes approximately 20–30 minutes, offering spectacular views of:
- Stone Town’s historic waterfront
- Traditional fishing boats
- Crystal-clear ocean waters
- Beautiful coral reefs
- Small tropical islands
Keep your camera ready, as dolphins are occasionally spotted during the crossing.
Arrival at Prison Island
As you approach the island, you’ll immediately notice its pristine white beaches, swaying palm trees, and historic coral stone buildings.
After a brief introduction from your guide, you’ll begin exploring one of Zanzibar’s most famous attractions.
The island offers a peaceful atmosphere that contrasts beautifully with the lively streets of Stone Town.
Visit the Giant Aldabra Tortoises
The highlight of every Prison Island tour is meeting the famous Aldabra giant tortoises.
These gentle giants are among the largest tortoises in the world and are one of Zanzibar’s most treasured conservation successes.
Many of the tortoises are over 100 years old, and some weigh more than 200 kilograms (440 pounds).
Visitors have the opportunity to:
- Observe the tortoises up close
- Feed them under staff supervision
- Learn about conservation efforts
- Photograph these incredible animals
- Discover their fascinating life cycle
The sanctuary provides a safe environment where the tortoises continue to thrive and reproduce.
Explore the Historic Prison Buildings
After visiting the tortoises, continue to the island’s historic prison complex.
Although the prison was never used to house criminals, it remains one of the island’s most significant historical landmarks.
Your guide will explain:
- Why the prison was constructed
- British colonial influence in Zanzibar
- The island’s role during the slave trade era
- How the buildings later became a quarantine station
- Architectural features of the coral stone structures
Walking through these preserved buildings offers valuable insight into Zanzibar’s rich history.
Discover the Former Quarantine Station
One of Prison Island’s lesser-known stories is its use as a quarantine station.
During the late 19th and early 20th centuries, travelers arriving by sea who were suspected of carrying infectious diseases were temporarily isolated here before entering Zanzibar.
Today, visitors can explore the restored buildings while learning how the island helped protect public health during that period.
This historical experience adds another fascinating layer to your visit.
Snorkeling Around Prison Island
The waters surrounding Prison Island are home to colorful coral reefs and abundant marine life, making snorkeling one of the island’s most popular activities.
After receiving your snorkeling equipment and safety briefing, you’ll enter the warm, crystal-clear waters to explore the underwater world.
Marine Life You May See
- Colorful tropical fish
- Butterflyfish
- Parrotfish
- Angelfish
- Moorish idols
- Starfish
- Sea cucumbers
- Sea urchins
- Hard and soft corals
The calm conditions make snorkeling enjoyable for both beginners and experienced swimmers.
Relax on the White-Sand Beach
Following your snorkeling adventure, take time to unwind on the island’s beautiful beaches.
Enjoy the peaceful surroundings while:
- Swimming in the warm Indian Ocean
- Walking along the shoreline
- Relaxing beneath palm trees
- Sunbathing
- Listening to the gentle waves
The island’s tranquil atmosphere makes it an ideal escape from the busy mainland.
Photography Opportunities
Prison Island is a paradise for photographers.
Every corner of the island offers stunning scenery and unique subjects.
Popular photography spots include:
- Giant Aldabra tortoises
- Historic prison buildings
- Crystal-clear turquoise waters
- White-sand beaches
- Traditional dhow boats
- Palm-lined coastline
- Coral reefs
- Panoramic views of Stone Town
Early morning and late afternoon provide the best lighting for photography.
Best Time to Visit Prison Island
Prison Island can be visited throughout the year, but some months offer especially favorable weather conditions.
June to October
This is the dry season, offering:
- Sunny skies
- Calm seas
- Excellent snorkeling
- Comfortable temperatures
December to February
These warm months are perfect for:
- Swimming
- Beach relaxation
- Boat excursions
- Underwater visibility
March to May
Although this is the rainy season, visitors can still enjoy the island during dry periods, often with fewer tourists.
What to Bring
To make the most of your Prison Island excursion, we recommend bringing:
- Light, breathable clothing
- Swimwear
- Beach towel
- Comfortable sandals
- Sunglasses
- Hat or cap
- Reef-safe sunscreen
- Waterproof phone case
- Camera
- Reusable water bottle
- Snorkeling gear (if preferred, though equipment is usually provided)
Combine Prison Island with Other Zanzibar Tours
Many visitors choose to combine Prison Island with other exciting Zanzibar experiences.
Popular combinations include:
Stone Town Walking Tour
Discover Zanzibar’s UNESCO World Heritage Site while exploring narrow streets, historic buildings, bustling markets, and cultural landmarks.
Nakupenda Sandbank
Relax on a stunning white sandbank surrounded by turquoise waters, enjoy fresh seafood, and swim in the Indian Ocean.
Spice Farm Tour
Visit one of Zanzibar’s famous spice farms to learn about cloves, cinnamon, vanilla, nutmeg, and tropical fruits while experiencing why Zanzibar is known as the “Spice Island.”
Jozani Forest Tour
Explore Zanzibar’s only national park and see the rare Zanzibar red colobus monkeys, lush mangrove forests, and diverse birdlife.
Sunset Dhow Cruise
End your day with a traditional dhow cruise, sailing along Zanzibar’s coastline as the sun sets over the Indian Ocean.
Travel Tips
To enjoy a smooth and memorable experience:
- Book your tour in advance, especially during the high season.
- Wear lightweight clothing suitable for warm weather.
- Carry cash for small purchases and tips.
- Respect wildlife by following your guide’s instructions around the tortoises.
- Avoid touching coral while snorkeling to help protect the marine ecosystem.
- Stay hydrated throughout your excursion.
- Bring a waterproof bag to protect valuables during the boat ride.
With its fascinating history, remarkable wildlife, crystal-clear waters, and peaceful atmosphere, Prison Island Zanzibar offers an unforgettable day trip that perfectly complements any Zanzibar holiday. Whether you’re exploring centuries-old buildings, meeting giant tortoises, or snorkeling among colorful reefs, every moment on the island is filled with discovery and natural beauty.
Tour Inclusions
Your Prison Island Zanzibar Tour with Tanzania Crown Safaris includes everything you need for a memorable island adventure.
Tour Includes
- ✔️ Hotel pickup and drop-off (if selected)
- ✔️ Return boat transfers from Stone Town
- ✔️ Professional English-speaking guide
- ✔️ Prison Island entrance fees
- ✔️ Visit to the Giant Aldabra Tortoise Sanctuary
- ✔️ Guided historical tour of the island
- ✔️ Snorkeling equipment (where included)
- ✔️ Bottled drinking water
- ✔️ Government taxes and VAT
Tour Exclusions
The following items are not included in the tour price:
- ❌ International and domestic flights
- ❌ Travel insurance
- ❌ Personal expenses
- ❌ Meals and drinks unless stated
- ❌ Tips for guides and boat crew
- ❌ Optional activities not mentioned in the itinerary
Frequently Asked Questions
How long does the Prison Island tour take?
A standard Prison Island tour takes approximately 3–5 hours, including the boat ride from Stone Town. Many visitors combine the tour with Nakupenda Sandbank or a Stone Town Walking Tour for a full-day experience.
How far is Prison Island from Stone Town?
Prison Island is located about 5.6 kilometers (3.5 miles) from Stone Town. The journey by boat usually takes 20–30 minutes, depending on sea conditions.
Can I feed the giant tortoises?
Yes. Visitors are often allowed to feed the giant Aldabra tortoises under the supervision of sanctuary staff. This is one of the most memorable experiences on the island.
Is Prison Island suitable for children?
Yes. The island is family-friendly and suitable for visitors of all ages. Children especially enjoy seeing the giant tortoises and exploring the beautiful beaches.
Is snorkeling included?
Many Prison Island tours include snorkeling equipment. You can explore colorful coral reefs and see a variety of tropical fish in the warm waters surrounding the island.
What is the best time to visit Prison Island?
The best months are June to October and December to February, when the weather is generally sunny and the sea is calm. However, Prison Island can be visited throughout the year.
Can I combine Prison Island with other Zanzibar tours?
Absolutely. Popular combinations include:
- Stone Town Walking Tour
- Nakupenda Sandbank Excursion
- Spice Farm Tour
- Jozani Forest Tour
- Sunset Dhow Cruise
Tanzania Crown Safaris can customize a full-day or multi-day Zanzibar itinerary based on your interests.
Why Book with Tanzania Crown Safaris?
At Tanzania Crown Safaris, we are committed to creating unforgettable travel experiences across Tanzania and Zanzibar.
Local Expertise
Our experienced guides share fascinating insights into Zanzibar’s history, culture, and wildlife, making every tour informative and enjoyable.
Comfortable and Reliable Service
From hotel transfers to boat rides and guided tours, we ensure a smooth and stress-free experience from start to finish.
Customized Zanzibar Experiences
Whether you want a half-day excursion or a complete Zanzibar holiday, we can tailor your itinerary to include:
- Prison Island
- Stone Town
- Nakupenda Sandbank
- Spice Farms
- Jozani Forest
- Mnemba Island
- Dolphin Tours
- Beach holidays
Our goal is to help you experience the very best of Zanzibar at your own pace.
Conclusion
A visit to Prison Island Zanzibar is much more than a simple boat trip. It is an opportunity to discover Zanzibar’s fascinating history, meet the famous giant Aldabra tortoises, snorkel in crystal-clear waters, and relax on a peaceful tropical island just minutes from Stone Town.
Whether you’re exploring the historic prison buildings, learning about the former quarantine station, or enjoying the island’s stunning beaches, Prison Island offers a unique blend of culture, history, wildlife, and natural beauty.
When you travel with Tanzania Crown Safaris, you’ll enjoy professional service, knowledgeable local guides, and a carefully planned experience that allows you to discover one of Zanzibar’s most iconic attractions with confidence and comfort.
Book Your Prison Island Zanzibar Tour
Ready to explore one of Zanzibar’s most famous attractions?
Book your Prison Island Zanzibar Tour with Tanzania Crown Safaris and enjoy a memorable day filled with history, wildlife, and breathtaking ocean scenery.
Contact us today for a personalized itinerary, competitive prices, and expert travel advice. Let us help you create unforgettable memories in Zanzibar.