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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The giant tortoises are the real reason to make this trip. On Changuu Island, you can walk among Aldabra tortoises brought from the Seychelles as a gift to Zanzibar’s sultan, then see the old prison buildings and peacocks. I like the private format and the easy 25 to 30 minute boat ride from Stone Town. I also like that swimming is possible.

The main caution is the beach. This is not a full beach day, and the small swimming area can have many boats around it. The prison ruins are modest, and poor weather can shorten the outing without making the price cheaper.

Key points to know before booking

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

  • The tortoise sanctuary is the highlight: You can see and photograph Aldabra giant tortoises at close range.
  • The boat ride takes 25 to 30 minutes: Changuu Island lies about 16 kilometers from Stone Town.
  • The prison ruins are simple: They date from 1893 and are best treated as a short historical stop.
  • Swimming depends on conditions: Clear water is available from the island beach, but boats may crowd the small shore.
  • You get a private guide and transport: Only your group takes part in the activity.
  • The $84 price reflects privacy more than length: The visit lasts about two to three hours, so it is not a full-day island excursion.

A short boat ride from Stone Town

This outing begins in Zanzibar City, usually with pickup offered as part of the private arrangement. From Stone Town, you travel by wooden motorized boat toward Changuu Island, the place commonly called Prison Island.

The crossing takes about 25 to 30 minutes. That is long enough to give you a proper look back toward Stone Town and short enough that the island feels easy to reach during a half-day in Zanzibar. Changuu lies about 16 kilometers from the old town, so you are not signing up for a demanding transfer.

I like this timing for people staying in Stone Town or working around a tight sightseeing schedule. You can visit the island and still have much of the day available for Zanzibar City. The trade-off is that the short duration leaves little room for delays, a long swim, or a slow historical visit.

The private setup matters here. You are not placed with a large group, and your guide can help organize the island visit around your interests. The included private transportation, bottled water, entrance fees, and guide also make the price easier to understand, though $84 per person is still a serious cost for a two to three hour experience.

Other short island hops from Zanzibar:

Meeting the Aldabra giant tortoises

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

The tortoise sanctuary is the strongest part of the tour. Aldabra giant tortoises were brought to Zanzibar from the Seychelles as a gift to the Sultan of Zanzibar in the early 20th century. The supplied information gives both 1915 and 1919 for this event, so it is safest to think of the tortoises as an early 1900s arrival rather than rely on one exact year.

You can see the tortoises, watch them at close range, and take photographs. For many people, this will be the most memorable part of the trip. The animals are unusual, visually striking, and far more engaging than a quick look at a small collection of old walls.

The sanctuary also gives the tour a family-friendly angle. Children often respond more strongly to large living animals than to a brief explanation of colonial-era construction. Adults who enjoy wildlife photography will also find more to work with here than at the prison ruins.

Still, keep expectations sensible. This is a visit to a tortoise sanctuary, not a wildlife safari. The tour information promises the chance to observe and photograph the tortoises, but it does not describe a long animal-care program, a feeding session, or a specialist wildlife talk.

Use your guide for the best way to approach the animals. You should follow local instructions and avoid treating the tortoises like props for photographs. The attraction is seeing them in a managed sanctuary, not turning the visit into a staged animal encounter.

What remains of the 1893 prison

A Half Day Private Prison Island Tour - What remains of the 1893 prison

The island’s name comes from the prison complex built by General, or Sir William, Lloyd Mathews in 1893. The facility was intended to house criminals from Zanzibar, though the tour description also refers to its role in the island’s later use.

Do not picture a vast prison fortress. The ruins are a compact historical stop, and the buildings themselves are not the main reason to choose this excursion. You will likely spend less time here than at the tortoise sanctuary, especially if the weather is hot or the group wants to reach the water.

I find the prison worth seeing because it gives the island a story beyond beaches and animals. The name Prison Island has real historical roots, and the remains help explain why Changuu became a familiar stop from Stone Town. But you should treat the ruins as a short visit, not a major archaeological site.

This is where a private guide can add value. A guide can point out what you are looking at and explain the connection between the buildings and Zanzibar’s past. Without that context, the ruins may feel like little more than a few old structures in a busy tourist stop.

The available information does not name an individual guide, so you cannot request a particular person by name. You do receive a private guide, and you should ask questions about the prison’s purpose, its construction in 1893, and the island’s changing role.

Peacocks, antelopes, and a slower walk

A Half Day Private Prison Island Tour - Peacocks, antelopes, and a slower walk

The tortoises are not the only animals on Changuu. Peacocks and antelopes are also found on the island, adding variety to the walk between the sanctuary, prison ruins, and beach.

These animals are a bonus rather than the main reason to book. The tour does not promise a set number of sightings or a dedicated animal-watching route. You might find them during your visit, but the tortoise sanctuary is the dependable wildlife feature.

That mix makes the island more interesting than a single monument stop. You can move from giant tortoises to old stonework, then continue toward the shoreline. The pace is likely relaxed, though the exact balance depends on your guide, weather, and how much time you choose to spend swimming.

Wear something suited to walking and water if you want to use the beach. Bottled water is included, but personal expenses are not, so carry anything else you may need rather than assuming additional purchases are covered.

A few more things to do in Zanzibar worth a look

Swimming beside the island

A Half Day Private Prison Island Tour - Swimming beside the island

The tour includes the chance to swim in clear water from the beach at Prison Island. This sounds like a beach excursion, but it is better understood as a sightseeing trip with a short swimming option.

That distinction matters. One detailed account of the experience found the beach too crowded with boats for easy swimming. The shore is small, and a busy period can change the feel of the stop. You may have clear water, but you should not expect a wide, empty beach.

The tour’s response also indicates that guides can advise you about where to swim or snorkel. Snorkeling is not listed as an included activity, so treat that as guidance rather than a promised part of the package. Ask your guide what conditions are suitable on the day.

Weather is another factor. The experience requires good weather, and one outing was shortened to about 1.5 hours after conditions changed. That is an important value point: the advertised duration is two to three hours, not a guarantee of a full three hours in every circumstance.

If swimming is central to your plans, this tour may feel too uncertain. If you mainly want the tortoises and ruins, the water is a pleasant extra rather than the deciding feature.

How the private format changes the experience

A Half Day Private Prison Island Tour - How the private format changes the experience

A private tour means only your group participates. That gives you more control than a shared boat trip, particularly at the tortoise sanctuary and beach.

You can ask the guide to spend more time with the animals, keep the prison visit brief, or leave enough time for a swim. The exact flexibility is not spelled out, so do not assume unlimited changes, but a private group normally makes conversation and timing easier.

Private transportation and a private guide are included. All fees and taxes are also included, along with bottled water. Personal expenses are not included, so the stated price should not be read as an all-inclusive spending budget.

The private setup is most useful for couples, families, or a small group with different priorities. One person can focus on photographs, another can ask about the prison, and another can decide to swim. A large shared group would make that harder.

The downside is cost. At $84 per person, the tour asks you to pay for privacy and convenience during a fairly short outing. If you are happy joining a larger group, a cheaper shared option could offer better value, though no alternative price is provided here.

Is $84 good value for two to three hours?

A Half Day Private Prison Island Tour - Is $84 good value for two to three hours?

The answer depends on what you value. The price includes private transportation, a private guide, bottled water, and all fees and taxes. You are also paying for the boat journey, the convenience of a private group, and access to three distinct parts of the island: tortoises, prison ruins, and beach.

For a couple or small group that wants a simple half-day plan from Stone Town, that package can make sense. You do not need to arrange the boat, find a guide, or manage separate entrance costs. The tour also fits neatly into a day that includes other activities.

The value becomes weaker if you picture a full beach day. The tour lasts only two to three hours, and the water stop may be short or crowded. The prison ruins are modest, so the experience does not provide hours of historical exploration.

Weather can also affect the calculation. If changing conditions reduce the visit to 1.5 hours, the price feels high. The provider’s policy says poor weather may lead to a different date or a full refund if the tour is canceled, but a tour that proceeds and then becomes shorter is a different situation.

I would book this for the tortoises and private convenience, not for an extended swim. That framing gives you a more realistic idea of what your $84 buys.

Timing, cancellation, and practical limits

A Half Day Private Prison Island Tour - Timing, cancellation, and practical limits

The tour is generally described as a two to three hour activity. The island visit itself is listed as about two hours, with the boat ride forming part of the overall outing. Plan around that range rather than expecting a fixed schedule down to the minute.

The activity is weather dependent. If poor weather forces cancellation, you can be offered another date or a full refund. You can cancel for a full refund up to 24 hours before the start time. Cancellations or changes made within 24 hours are not refunded or accepted.

Most people can participate, according to the supplied information. No specific accessibility details are provided, so you should ask the provider directly if you have mobility needs or require help with the boat, island paths, or beach access.

The experience includes a mobile ticket, and confirmation is received at booking. Pickup is offered, but the precise pickup point and time are not provided, so confirm those details before the day of the tour.

Who should book this Prison Island tour?

I would recommend it to you if you want three things in one short outing: a close look at Aldabra giant tortoises, a glimpse of Zanzibar’s old prison ruins, and the possibility of a swim. It also suits you if privacy matters and you prefer a guide who can adjust the pace for your group.

Families may like the animal focus. Couples can fit it into a busy Stone Town schedule. First-time visitors who want an easy island trip without arranging separate transport may also find the setup convenient.

I would hesitate if your main goal is a quiet beach day, serious snorkeling, or a long historical tour. The shore can be crowded with boats, the ruins are limited, and weather may shorten the visit. You should also compare the $84 price with your interest in the private format.

Book it when the tortoises are your priority and you see swimming as a bonus. Skip it when you want a full day by the sea. Changuu Island offers a worthwhile, compact outing, but it is best enjoyed with clear expectations about its short duration and busy beach.

FAQ

How far is Prison Island from Stone Town?

Changuu Island, also called Prison Island, is about 16 kilometers from Stone Town. The wooden motorized boat ride takes approximately 25 to 30 minutes.

How long does the tour last?

The tour lasts about two to three hours. Weather and conditions can affect the actual length.

What animals can I see on Prison Island?

You can see Aldabra giant tortoises, peacocks, and antelopes. The tortoise sanctuary is the main wildlife attraction.

Can I swim on Prison Island?

Yes. The tour gives you the chance to swim in clear water from the island beach. The swimming area can be busy with boats, and snorkeling is not listed as an included activity.

Is this a private tour?

Yes. Only your group participates. Private transportation and a private guide are included.

What happens if bad weather cancels the tour?

If the experience is canceled because of poor weather, you will be offered a different date or a full refund. You can also cancel at least 24 hours before the start time for a full refund.

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