Endau-Rompin National Park, Johor

The second-largest national park in Peninsular Malaysia, Endau-Rompin preserves a crucial block of lowland rainforest and is one of a handful of remaining habitats for the critically endangered Malayan tiger, straddling the Johor-Pahang border. Multi-day river and jungle trekking expeditions into the park's interior waterfalls and prehistoric plants are among Malaysia's most rewarding wilderness adventures.