Situated in south-west Sri Lanka, Sinharaja Forest Reserve is the country’s most important primary tropical rainforest and is declared as a World Heritage site, being one of the largest and oldest lowland rainforests in the world. More than 60% of the trees are endemic and many of these trees are considered rare species. The reserve is also home to Sri Lanka’s endemic wildlife and houses over 50% of the country’s endemic species of mammals and butterflies, different kinds of insects, reptiles and rare amphibians. Tourists are advised to plan their visits between January and April when rains are only in the afternoons.