Chitwan National Park lies 120 km south-west of Kathmandu with an area of 932 square kilometers. It was established in 1973 and was later declared a World Heritage Site by UNESCO in 1984. The park is covered with deciduous forests overlooking the floodplains of Narayani, Rapti and Reu rivers and offering a wilderness of rich ecosystem that includes mammals, birds, reptiles and water animals of several kinds. The park has a record of 600 plant species, 50 mammals, 526 birds and 49 amphibians & reptiles.The highlights of this park are endangered species of some 500 Asian one-horned rhinoceros and some 100 nocturnal Royal Bengal tiger that live in the dense forests of the park. The rare attraction is the world’s fresh water dolphin variety sometimes seen in Chitwan’s Narayani River. The park headquarters at Kasara is a 21-km drive from Bharatpur which is 20 minutes by air or 146 km by road from Kathmandu.