It is the nearest park to Kathmandu. It is situated Situated in the Central Himalaya. The area of the Langtang National Park extends from 32 km north of Kathmandu to the Nepal-China (Tibet) border. Langtang was designated as the first Himalayan National Park in 1970-71, and was gazetted in March 1976.The main purpose of the Langtang National park is to preserve the natural environment, and protecting the endangered wild lives at the same time allowing local people and tourists to follow traditional land use practices that are compatible with resource protection. Some of the most attractive areas of the park include the Langtang Valley, the holy lakes at Gosainkunda, and the forested hillsides above the village of Helambu.

The park contains a wide variety of climatic zones, from subtropical to alpine. Approximately 25% of the park is forested. Trees include the deciduous Oak and Maple, and evergreens like Pine, and various types of Rhododendron. Animal life includes Himalayan black bear, the goat-like Himalayan tahr, Rhesus monkeys and Red Pandas. There are also stories of Yeti sighting