If natural beauty, serene, tranquil environment is what you are looking for, then Kosi River is the place to be! This river, which travels across Nepal, India and China is considered to be one of the most sacred rivers in the Hindu mythology. The river, which comes from the major confluence of tributaries from Chatra Gorge offers incredible sites, while giving you the opportunity to discover the mountains and terrain of Nepal.
Highlights: The river basin is surrounded by several tributaries as well as major hill stations. It is also the home for several lakes and glaciers. The place is a must visit if you are a nature enthusiast and wish to see how the Nepalese government is taking different steps for irrigation, flood control and regular development of the river. Koshi is perfect for fishing, river rafting, cannoning and other adventure sports.
Location: Sun Kosi, Arun and Tamur (source)