Just a short boat ride from Stone Town, Prison Island is one of the most popular half-day excursions in Zanzibar. Officially known as Changuu Island, it is a relatively small island with a history that is quite different from what its name might suggest.
For first-time visitors, Prison Island offers a combination of history, nature and an easy boat trip from Zanzibar. It can be visited in a few hours, making it a convenient addition to a longer Zanzibar itinerary.
At Azao Resort & Spa, we often find that guests want to know what an excursion is actually like before deciding whether to include it in their plans. So, if Prison Island is on your list, here are the practical details worth knowing before you go.
Where Is Prison Island in Zanzibar?
Prison Island, or Changuu Island, is located approximately 5 kilometres northwest of Stone Town, just off the coast of Zanzibar.
The island is usually reached by a short boat journey from Stone Town. Depending on the sea conditions and the type of boat used, the crossing generally takes around 20 to 30 minutes.
Because of its proximity to Stone Town, Prison Island is easy to combine with other activities in the area. Many visitors choose to spend a few hours on the island and return to Stone Town on the same day.
Why Is It Called Prison Island?
The name comes from the island’s history.
A prison complex was constructed on Changuu Island in the late 19th century, although it was not ultimately used as a permanent prison in the way many visitors might expect. The island was later used as a quarantine station, particularly for people arriving in the region during periods when diseases such as yellow fever were a concern.
Today, the remains of the historic buildings are part of the island’s attractions. Walking through the old structures provides an opportunity to learn more about Zanzibar’s history and the role the island once played in the wider region.
For visitors interested in the history of Zanzibar, this is one of the reasons Prison Island is worth including in an itinerary.
What Can You See on Prison Island?
There are several things to experience during a visit.
Giant Aldabra Tortoises
The island is particularly well known for its Aldabra giant tortoises. These large tortoises are among the main reasons families and wildlife enthusiasts include Prison Island in their Zanzibar plans.
Visitors can see the tortoises in the designated sanctuary area and observe them at close range. Some of the tortoises are very old, making the experience particularly interesting for children.
It is important to follow the site’s rules and treat the animals respectfully. Avoid feeding them unless permitted by the staff and give them appropriate space.
The Historic Buildings
The old quarantine and prison-related buildings provide another reason to visit.
While the structures are relatively compact, they offer an interesting glimpse into the island’s past. A guide can add useful context by explaining how the buildings were used and how Zanzibar’s position along major Indian Ocean trade routes influenced its history.
The Beach and Surroundings
Prison Island is also a place to spend some time outdoors. Depending on the conditions, visitors can enjoy the shoreline, take photographs or simply explore the island at a relaxed pace.
Some excursions also include opportunities for swimming or snorkelling around the island. Sea conditions and visibility vary, so check what is included in your tour before setting out.
How Long Do You Need for Prison Island?
A typical visit takes around half a day, although the exact duration depends on your boat transfer, time spent on the island and whether your excursion includes snorkelling or other activities.
If you are staying in Zanzibar for a limited number of days, this makes Prison Island relatively easy to fit into your schedule.
A morning excursion can leave the rest of the day free, while an afternoon trip can work well for guests who prefer a slower start.
How Do You Get to Prison Island?
The most common way to visit Prison Island is by boat from Stone Town.
You can arrange a private boat, join a group excursion or book a guided tour that includes transport and entry arrangements.
Before booking, check exactly what is included. Some excursions cover only the boat transfer, while others may include a guide, snorkelling equipment, entrance fees or additional stops.
Weather and sea conditions can affect boat journeys, so keeping your schedule somewhat flexible is useful.
Is Prison Island Suitable for Families?
Yes. Prison Island can be a good excursion for families, particularly because the boat journey is relatively short and the giant tortoises are an attraction that children often enjoy.
For families choosing accommodation in Zanzibar, having access to convenient excursions can make planning easier. A best Family resort Zanzibar experience is not only about facilities at the property; being able to combine comfortable resort time with manageable day trips can also be important.
Families should consider the time of day, sun exposure and sea conditions when planning the visit. Bringing water, sun protection and comfortable footwear is recommended.
What Should You Take to Prison Island?
You do not need to pack much for a half-day trip, but a few essentials are useful:
- Sun protection and a hat
- Drinking water
- Comfortable footwear
- Swimwear and a towel if swimming is planned
- A camera or phone
- A small amount of cash
- Any essential personal items
If you are travelling by boat, it is better to keep your belongings in a small, secure bag rather than carrying unnecessary luggage.
When Is the Best Time to Visit Prison Island?
Prison Island can be visited throughout the year, but conditions at sea and the weather can influence the experience.
Morning excursions are often a comfortable choice because temperatures are generally more manageable earlier in the day. However, the best time for your visit ultimately depends on your itinerary, weather conditions and boat availability.
Your tour operator or resort team can help you decide when to schedule the excursion based on your plans.
Can You Visit Prison Island From Your Zanzibar Resort?
Yes. If you are staying outside Stone Town, you can arrange transport to Stone Town before taking the boat to Changuu Island.
For guests staying at a best beach resort Zanzibar property, Prison Island can work particularly well as a half-day excursion. You can spend part of your day exploring the island before returning to your resort for a more relaxed afternoon.
At Azao Resort & Spa, we believe that excursions should complement your stay rather than make the entire day feel rushed. Planning Prison Island as a shorter outing gives you the flexibility to experience another side of Zanzibar while still having time to enjoy the resort.
Frequently Asked Questions About Prison Island
Is Changuu Island the same as Prison Island?
Yes. Changuu Island is the island’s official name, while Prison Island is the name commonly used by visitors because of its historical connection with the former prison and quarantine facilities.
Do you need a guide to visit Prison Island?
A guide is not necessarily required for the boat journey itself, but having one can make the visit more informative. A local guide can explain the island’s history, point out notable sites and provide context about the tortoise sanctuary.
Is Prison Island accessible for older visitors?
The island can be visited by older travellers, but conditions can vary depending on the boat, landing area and weather. Anyone with mobility concerns should discuss accessibility with the tour operator before booking.
Is there an entrance fee for Prison Island?
Visitors may need to pay an entrance or conservation fee, depending on the current arrangements on the island and the type of excursion booked. Always confirm whether these costs are included in your tour price before departure.
What type of boat is used to reach Prison Island?
Visitors typically travel from Stone Town by a small motorised boat. The type and size of boat can vary depending on whether you choose a private excursion or a shared tour.
Can you visit Prison Island without booking a tour?
It is possible to arrange a private boat from Stone Town rather than joining a packaged tour. However, arranging the trip through a reputable operator can make it easier to coordinate boat transfers, island access and any additional activities.
Is Prison Island good for a short Zanzibar holiday?
Yes. Because the excursion can generally be completed within a few hours, it can fit into a shorter Zanzibar itinerary without taking up an entire day. This makes it particularly useful for travellers who want to combine sightseeing with time at their resort.
What should families consider before visiting Prison Island?
Families should consider the boat journey, sun exposure, weather and the age of children travelling. Young children may need extra supervision around the water and while exploring the island. Choosing a suitable departure time can also make the excursion more comfortable.
Can Prison Island be combined with Stone Town?
Yes. Since the boat trips to Prison Island commonly depart from Stone Town, the two can be combined in the same outing. This can be a practical way to experience both the island and Zanzibar’s historic centre without arranging separate transfers.
What is the main reason to visit Prison Island?
The appeal is the combination of Zanzibar’s history, the Aldabra giant tortoises and a short boat excursion. It is especially suitable for visitors who want to add a cultural and wildlife-focused experience to their Zanzibar holiday without committing to a full-day trip.
If you are staying at Azao Resort & Spa, our team can help you plan your Zanzibar experiences around the pace you prefer. Whether you are travelling as a family, looking for a relaxed day away from the resort or simply want to understand more about Zanzibar’s history, Prison Island can be a worthwhile addition to your itinerary.
A little planning beforehand—particularly around boat timings and weather—can make the visit much more enjoyable.
To read more blogs, click here: Can You Do a Safari in a Day From Zanzibar? Here’s the Truth