Sinharaja (11,250 ha), is the jewel of the last remaining virgin rainforest crown in country is located in the wet zone of the country. The primeval Sinharaja covers 8900 hectares of breathtakingly beautiful, continuous forest.

Sinharaja Forest Reserve is considered one of the most important natural habitats in Sri Lanka. This majestic rainforest was deemed an International Man and Biosphere Reserve in 1978 and deservedly designated a UNESCO World Heritage Site in 1989. The forest offers a huge diversity of species both flora and fauna with a large proportion of those being indigenous to the country and some more specifically endemic to Sinharaja itself.

Many indigenous birds such as Layard's parakeet (Psittacula calthripae), the Jungle fowl (Gallus lafayetii ), the Spur fowl (Galloperdix bicalcarata), the Ceylon Wood Pigeon (Columba torringtonii), the Ceylon Hanging Parrot (Loriculus beryllinus), the Ceylon Grey Hornbill (Ocyceros gingalensis), the Ashy-headed Laughing Thrush (Garrulax cinereifrons), the Brown- capped Babbler (Pellorneum fuscocapillum), the Red-faced Malkoha (Phaenicophaeus pyrrhocephalus) and the Ceylon Blue Magpie (Urocissa ornate) among others, are prominent in this area.