Cuc Phuong National Park, Vietnam.
Cuc Phuong National Park is located 160 kilometres south west of Hanoi. It is the first of Vietnam’s nine national parks to be established, and it contains over 200 square kilometers of rainforest. Tourists go there to study butterflies, visit caves, hike mountains and look at the 1000 year old tree. The best time to visit the park is during the dry season, from October to April, when the rainy season is over.