Situated in the eastern province. Established in 1954, thought of as one of the major reserves in Sri Lanka since it has a very rich biodiverity in its 25,900 hectare area. A famous site for bird-watching since about 150 birds can be observed within the santuary. Boat rides are taken to visit the Bird Island which have a very high concentration of birds. This National Park came about when protecting the largest lake in Sri Lanka, the Senanayaka Samudraya.