One of Africa's quirkiest and most underrated protected areas, Rubondo comprises a lushly forested 240 sq km island set in the Tanzanian waters of Lake Victoria (the world’s second largest lake). The park was established in the 1960s as a proposed breeding centre for introduced Congolese rainforest animals. This experiment never really came together, but Rubondo does still support some introduced wildlife, including elephant and giraffe, alongside naturally occurring species such the swamp-loving sitatunga antelope. The island is also home to around 70 chimps descended from eight males and nine females released there in the late 1960s. After being left to their own devices for decades, Rubondo’s chimps have now been habituated for tourist visits.

Pros: Home to just one small luxury beach lodge, Rubondo Island makes for an exclusive and very tranquil add-on to a safari in the ever-popular Serengeti National Park.

Rubondo’s chimps are descended from individuals that were born wild in West Africa, then captured as youngsters and held in zoos or circuses. It is thus the easiest place to see the western chimpanzee, a critically endangered subspecies that is far rarer than its eastern counterpart.

Cons: Although Rubondo’s chimps are almost certain to be seen by determined visitors, locating them might involve a long walk, and they are shyer than in most other trekking destinations.

It is not easy for independent or budget-conscious travellers to arrange chimp trekking here.