While it is not located in Marawila, it is only a mere 25 kilometres away from Amagi Beach, which is well noted Marawila holiday resort. Spanning almost 1300 square kilometres, this park gets its name from the many "willus" or natural lakes that are presently scattered across the park. It is noteworthy to mention that the WIlpattu park is not only the largest but also the oldest national parks in Sri Lanka. It is known for its leopard population. Apart from these, the park is home to many species of eagles, owls, gulls and mugger crocodile. The threatened species are the elephants, the sloth bears, leopards and sambur deer.