Established in 1962, Khao Yai was then Thailand’s sole national park. Today there are well over 100, but this one remains popular. Set over 2,000 sq km (770 sq miles), the park has a wide variety of habitats, including submontane evergreen forests and grasslands. There are also several mountains of around 1,000 m (3,300 ft), including Khao Khieo. The abundant wildlife includes many endangered mammals such as elephants, gibbons, tigers and Malaysian sun bears, as well as more than 300 bird species. Visitors are advised to hire a guide for trips to more remote parts. The surrounding area offers luxurious resorts, golf courses, and even vineyards.