Reviewed · PRISON ISLAND TOURS

A Half Day Private Prison Island Tour

★ 4.0 · 5 reviews From $84 Operated by Zanzibar Crystal Tours & Safaris · Bookable on Viator
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Prison Island’s biggest draw is not the old prison. It is the chance to get close to Aldabra giant tortoises, some brought to Zanzibar as a gift to the Sultan. I also like the short boat ride from Stone Town and the freedom of a private guide, who can help you find a quieter place to swim.

I like that the tour bundles transport, admission fees, bottled water, and a guide into one price. The main caution is the beach: it is small, and many boats may gather there, so this is better as a tortoise and history outing with a possible swim than as a full beach day.

Key points to know before you book

A Half Day Private Prison Island Tour - Key points to know before you book

  • The tortoise sanctuary is the main event: You can see and photograph Aldabra giant tortoises at close range.
  • The boat ride takes 25 to 30 minutes: You cross from Stone Town in a wooden motorized boat.
  • The prison dates from 1893: General, or Sir William Lloyd Mathews, built it to house Zanzibar criminals.
  • Swimming depends on conditions: The water can be clear, but the small beach may have many boats around it.
  • Private means only your group participates: A private guide and transportation are included.
  • The tour is short and weather-sensitive: Plan on roughly two to three hours, with free cancellation up to 24 hours before departure.

A short crossing from Stone Town to Changu Island

A Half Day Private Prison Island Tour - A short crossing from Stone Town to Changu Island

Prison Island, also called Changu Island, lies about 16 kilometers from Zanzibar’s Stone Town. The crossing takes roughly 25 to 30 minutes by wooden motorized boat, making this an easy half-day addition to a Stone Town visit.

That short ride is part of the appeal. You leave the old town behind, cross open water, and arrive at an island with a very different pace. The trip is not an all-day cruise, so you can fit it around other plans in Zanzibar City.

The tour includes private transportation and a private guide. That matters here because the island visit has two quite different parts: the tortoise sanctuary and the historic ruins. Your guide can explain what you are seeing and, according to the tour details, advise you on where to swim or snorkel.

The precise timing is flexible within the stated two to three hours. One account describes a visit lasting only about 1.5 hours after the weather changed. Since the tour requires good weather, leave some room in your day rather than booking a tightly timed activity immediately afterward.

Meeting the Aldabra giant tortoises

A Half Day Private Prison Island Tour - Meeting the Aldabra giant tortoises

The tortoise sanctuary is the strongest reason to book this trip. The Aldabra giant tortoises were brought to Zanzibar from the Seychelles as a gift to the Sultan of Zanzibar. The information supplied for the tour gives both 1915 and 1919 as the arrival date, so you may hear one of those years during the visit.

These are not distant animals viewed from behind a barrier. You can observe them closely and take photographs. Their size and slow, deliberate movement make this an especially good stop for families and anyone who enjoys wildlife but does not want to spend a full day on safari.

The tortoises are also the part of the outing most likely to justify the price. The prison ruins are modest, while the sanctuary gives you a direct encounter with an unusual species in a setting linked to Zanzibar’s royal and colonial past.

You should still treat the animals with care. The available information confirms that you can take pictures with them, but it does not promise feeding, petting, or a private animal encounter. Follow the guide’s instructions and allow the tortoises space.

What remains of the 1893 prison

The island’s name comes from the prison built in 1893 by General Lloyd Mathews, also identified in the tour description as Sir William Lloyd Mathew. It was intended to house Zanzibar criminals.

Do not expect a grand prison complex. The ruins are a historic stop rather than a major architectural sight. One of the most useful ways to approach them is to keep expectations modest: you are seeing the remains of a small island facility, not touring a large, intact prison.

That limitation does not make the stop pointless. The ruins help explain why Changu Island became known as Prison Island, and they give the tour a second theme beyond wildlife. The visit works best when you combine the two: tortoises for the memorable visual experience, ruins for a brief historical pause.

The island’s name can also create the wrong expectation. It was not simply a place where prisoners lived out long sentences, based on the information provided here. The structure was built to house criminals, and the ruins are now part of a short sightseeing visit.

Peacocks, antelopes, and a small island setting

A Half Day Private Prison Island Tour - Peacocks, antelopes, and a small island setting

The tortoises are the headline animals, but the island also has peacocks and antelopes. These extra species add interest as you walk around, though they should be treated as possible sightings rather than the central purpose of the tour.

The compact setting helps keep the visit manageable. You do not need a long hike to reach the main attractions, and the guide can lead you between the historic and wildlife stops before returning you to the shore.

This is a useful outing if you want variety in a short window. In a few hours, you can take a boat, see unusual animals, visit historic ruins, and spend time by the water. The tradeoff is that none of these parts is likely to feel like a full-day activity on its own.

The beach and the reality of swimming

A Half Day Private Prison Island Tour - The beach and the reality of swimming

The island has a beach where you can swim in clear water. That sounds attractive, but you should read the beach description carefully. The shore is small, and several boats may be moored around it at busy times.

Boat traffic can make swimming difficult, especially if you are hoping for a calm, open stretch of water. The beach is not best viewed as a private place to spend the day, and the tour does not promise a dedicated snorkeling session.

If swimming matters to you, ask your guide where conditions are safest and least crowded. The guide may be able to point you toward a better place on the island, but the supplied details do not guarantee snorkeling equipment, a private beach, or a quiet cove.

Weather is another factor. One departure became much shorter after poor weather arrived at the island. The tour provider cannot control a sudden change in conditions, and you may be given the choice to stay at the beach or swim before returning. If you choose to leave early, the normal cancellation terms do not create an automatic refund for time lost during the outing.

Is $84 a fair price?

A Half Day Private Prison Island Tour - Is $84 a fair price?

The listed price is $84 per person. It includes private transportation, all fees and taxes, bottled water, and a private guide. A past account refers to an $80 charge, so check the current amount when you reserve, but use $84 as the present comparison point.

For a private half-day outing, the price can be reasonable if your group values convenience and personal attention. You are not only paying for entry to the island. You are also paying for the boat transfer, a guide, and transport arranged around your party.

The value is less convincing if you mainly want a beach day. The island’s shore can be crowded with boats, and the swimming portion may be brief or uncomfortable. A shared outing could offer a lower price if you care more about reaching the island than having private transport and a guide.

The private format is particularly useful for families or small groups with different interests. One person can focus on the tortoises, another can look around the ruins, and the guide can help organize the short visit without adding unrelated stops for other people.

There are group discounts, but no exact discount amount is provided. Ask for the total price for your party before booking so you can compare it with a shared boat trip.

Who will get the most from this outing?

A Half Day Private Prison Island Tour - Who will get the most from this outing?

I would recommend this tour most strongly to people staying in Stone Town who want a short wildlife and history trip. It is also a good match for families, private groups, and anyone who prefers a guide rather than arranging a boat independently.

You are likely to enjoy it if:

  • You want to see Aldabra giant tortoises up close.
  • You have only half a day available.
  • You prefer a private vehicle, boat, and guide.
  • You like combining a historic site with a wildlife stop.
  • You are flexible about swimming and beach conditions.

I would be more cautious if your main goal is snorkeling, a long swim, or a peaceful day beside the sea. The island can have many boats around the beach, and poor weather may shorten the visit.

The tour is normally booked about 71 days in advance. That suggests you should plan ahead during busy periods, especially if you need a particular date or want to arrange the outing around a Stone Town schedule.

Timing, weather, and what to bring

A Half Day Private Prison Island Tour - Timing, weather, and what to bring

The stated duration is approximately two to three hours, including the boat crossing and island visit. The actual time can be shorter if weather changes or if you decide not to remain at the beach.

The tour requires good weather. If the provider cancels because conditions are poor, you will be offered another date or a full refund. If you cancel, you must do so at least 24 hours before the local start time for a full refund. Cancellations within 24 hours are not refunded, and changes within that period are not accepted.

The included bottled water is useful, but the details do not list meals, towels, snorkeling gear, or personal supplies. Bring anything you need for the beach yourself, while keeping expectations focused on a short swim rather than a full water-sports session.

Because the visit includes a boat ride and outdoor stops, weather can shape the day more than the schedule suggests. A clear morning may not guarantee clear conditions later. Keep your afternoon reasonably open, and avoid booking a nonrefundable activity immediately after this one.

How the tour feels as a private experience

Private does not mean the island will be private. Your group is the only group with your guide and transportation, but Changu Island is a public attraction with other boats arriving.

That distinction is important. You gain control over your pace and can ask for advice about swimming, but you do not get an empty beach or exclusive access to the ruins. The private format improves the logistics rather than removing the island’s other visitors.

The guide is included, but no guide’s name is supplied. Confirmation is provided at booking, and most people can participate. If you have a specific mobility, medical, or participation concern, ask the provider before paying because the available details do not give a fuller accessibility description.

My verdict on the Prison Island half-day trip

I see this as a compact tortoise-and-history excursion, not a premium beach escape. The Aldabra giant tortoises are the clear highlight, and the boat ride, ruins, peacocks, and antelopes give the short visit enough variety.

Book it if you want a private, simple trip from Stone Town and would be happy even if swimming turns out to be limited. Think twice if you are paying mainly for snorkeling or a quiet beach. At $84 per person, the best value comes from the private transport, guide, and close look at the tortoises, not from the size or solitude of the beach.

FAQ

Where is Prison Island located?

Prison Island, also called Changu Island, is about 16 kilometers from Stone Town in Zanzibar City, Tanzania.

How long does the boat ride take?

The wooden motorized boat ride from Stone Town takes about 25 to 30 minutes.

How long does the full tour last?

The tour lasts approximately two to three hours, though weather or an early departure can make it shorter.

What animals can I see on the island?

The main animals are Aldabra giant tortoises. You may also see peacocks and antelopes.

Can I take photographs of the tortoises?

Yes. The tour includes the chance to observe the tortoises and take pictures with them.

What is the prison on Prison Island?

The prison ruins were built in 1893 by General Lloyd Mathews, also identified in the tour details as Sir William Lloyd Mathew, to house Zanzibar criminals.

Can I swim at Prison Island?

Yes, swimming is possible from the island’s beach when conditions allow. The beach may have many boats around it, so swimming space can be limited.

Is this a private tour?

Yes. Only your group participates in the private tour, and a private guide and private transportation are included.

What is included in the $84 price?

The price includes private transportation, all fees and taxes, bottled water, and a private guide.

What happens if bad weather cancels the tour?

If the provider cancels because of poor weather, you will be offered a different date or a full refund.

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