The World's Most Pristine Forests
Kayan Mentarang National Park, Indonesia
Kayan Mentarang, on the verdant island of Borneo, is one of the last remaining homes to the rhinoceros hornbill and strange primates like proboscis and leaf monkeys. The big draws for tourists (and poachers) are the adorably petite Sumatran rhino and the Borneo pygmy elephant.
How to Go: Asia Transpacific suggests a six-day itinerary beginning at the village of Long Layu. Local Dayak tribes still live in communal dwellings and guests do, too, as there is no accommodation in the park.