To enjoy the behavior of animals, and to get into fun and knowledge-filled travel, there are 22 national parks in the country accessible for visitors; the Yala National Park, Kumana, Willpattu, Galoya and Udawalawa wildlife sanctuary are the larger once. Among the smaller wildlife sanctuaries are the Maduru Oya, Bundala, and Wasgamuwa National Parks. Horton Plains, which is a UNESCO Heritage in the central highlands also offer breathtaking trekking trails.