Bukit Lawang Gunung Leuser National park, where you will have a chance to hike some of the world's most beautiful rain forests ultimately leading to a viewing of one of Sumatra's most famous inhabitants, the Sumatran Orang Utan. Arrive in Medan in the morning to Bukit Lawang Gunung Leuser National Park, one of the largest national parks in the world containing over 800,000 hectares of rainforest. The journey leads past scenic rubber and palms plantations, were you can enjoy the cool mountain's air. A hike up further into the forest offers an up-close view of incredible scenery with various tropical plants including a tangle of enormous trees, twisting lianas, palms, ferns, and as well as weird and wonderful flowers. The trek leads to the feeding ground where you will have the opportunity to admire those magnificent apes in the wild (The trek normally takes up to 3 hours both ways).