Danum Valley Conservation Area, Sabah

A 438-square-kilometre block of virtually pristine lowland dipterocarp rainforest in interior Sabah, Danum Valley is one of the most species-rich places on earth — accessible only via a 75-kilometre logging road and accommodation at the Borneo Rainforest Lodge. Night drives frequently encounter clouded leopards, Sunda flying squirrels, and the Bornean pygmy elephant.