Sinharaja Rainforest Sri Lanka – A World of Biodiversity, Wildlife & Adventure Hidden in the lush southwest of Sri Lanka lies one of the island's most extraordinary natural treasures — Sinharaja Rainforest . For travellers looking to experience a different side of Sri Lanka beyond beaches, ancient cities and cultural sites, Sinharaja offers something truly special: an ancient tropical rainforest filled with endemic wildlife, towering trees, colourful birds, streams, butterflies and an incredible diversity of plants. Recognised as a UNESCO World Heritage Site , Sinharaja is one of the best places in Sri Lanka for nature lovers, wildlife enthusiasts, photographers, bird watchers and adventurous travellers. Where Is Sinharaja Rainforest? Sinharaja Forest Reserve is located in the southwestern wet zone of Sri Lanka , extending across parts of the Ratnapura, Galle and Matara districts . The rainforest receives an ...