The main draw to Sumatra for me was the Orang-utans. Gunung Leuser National Park is the native habitat of the Sumatran Orang-utan and Bukit Lawang is a small tourist village at the park’s entrance. Located by a rapid river, the village is home to smiling faces of travellers and locals. There is a feeding platform that tourists can visit twice a day to watch the rangers feed the semi-wild orang-utans. Most people come here to trek in the jungle, for 1-3 days. The trekking service is slightly pricey but among the best I’ve seen. The prices are fixed and set by the park, and it covers the cost of hiring a guide (compulsory), food and camping overnight with the option of travelling back on a local rubber raft made of inflated tubes tied together. Loads of fun!