Jozani Chwaka Bay National Park

Jozani Chwaka Bay National Park is Zanzibar's only national park, covering around 50 square kilometres of ancient forest, mangrove channels, and coastal wetlands in the centre of the island. It's the last significant remnant of the indigenous groundwater forest that once blanketed much of Zanzibar, and it's the primary — and arguably the only serious — habitat left for the Zanzibar red colobus monkey, a subspecies found nowhere else in the world. These monkeys were critically endangered not long ago; conservation work here has helped stabilise their population to a few thousand, making the park genuinely important, not just pretty.

Visiting means walking well-maintained forest trails with a local guide, coming face to face with troops of red colobus monkeys that have grown so accustomed to humans they'll swing within arm's reach overhead. The colobus are the headline act — vivid auburn fur, black faces, and a habit of sitting in patches of sunlight that makes them almost theatrical — but the forest itself is extraordinary. There are also Sykes' monkeys, bush babies, over 40 butterfly species, and a rich understorey of ancient fig trees and tropical palms. A separate boardwalk trail winds through a mangrove ecosystem out toward the tidal flats of Chwaka Bay, where the shift from forest to coast happens quietly and completely.

The park is about 35 kilometres south of Stone Town, easily reached by dalla-dalla (shared minibus) or arranged through virtually any hotel. The entry fee includes a mandatory guided walk, which sounds like a tourist formality but actually makes a real difference — the guides know where the monkey troops are feeding and can read the forest in ways you simply won't on your own. Arrive early, before the midday tour buses from the beach resorts descend, and you'll have a noticeably better experience.