Located in Gunung Lesung National Park, Gunung Lesong is a UNESCO World Heritage Site with a 9.6-km out-and-back trail in the paradisiacal tropics. After hiking for two hours past scenic cliffs, cascading waterfalls, campsites and shrines, you would reach the peak, which stands at 1,865 metres. Gunung Lesong is also famous for sunrise trekking and swimming at the Wong Jampang Waterfall.