Changuu Island, Island with colonial prison in Zanzibar Archipelago, Tanzania.
Changuu Island is a small coral landmass in the Zanzibar Archipelago featuring colonial-era structures that once functioned as a prison and quarantine facility. The site includes preserved buildings, grounds, and now serves as a sanctuary for giant tortoises.
The island was developed as a prison under British control in 1893 and later converted to quarantine infected people during disease outbreaks. This medical function continued to shape its use through much of the 20th century.
The island reflects layers of cultural influence visible in how the structures are built and used today, showing the blend of Arab and African heritage alongside colonial-era construction. This mixing of traditions shapes what visitors see when walking through the grounds.
The island is accessible by boat from Stone Town harbor with regular departures throughout the day; be mindful of tidal conditions and weather that may affect the journey. Plan your visit during calmer sea conditions for a more comfortable crossing.
The island houses a collection of Aldabra giant tortoises that originally arrived as a gift from the Seychelles government in the late 1800s and remain there today. These creatures are now one of the main reasons visitors come and give the place a distinctive character.
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