The sinharaja rain forest is the largest rainforest reserve in Sri Lanka. In 1840 Sinharaja became a crown property. In 1988 the Sinharaja was made a national Wilderness area. In 1989 UNESCO include the Sinharaja forest in the World Heritage list, as the first National Heritage of Sri Lanka. The Sinharaja forest is home to many rare animals,birds,butterflies,insects,reptiles and trees. Ferns and mosses grow well as the climate is humid because of heavy rainfall.