Khao Yai is Thailand's third-largest national park and a UNESCO World Heritage Site. In the west, Saraburi, in Nakhon Nayok, in Nakhon Ratchasima, and in Prachinburi, it covers four provinces (east). Just three hours' drive from Bangkok, Khao Yai is a year-round vacation destination that is blessed with a hilly terrain, fertile valleys, thundering waterfalls, and a rich biodiversity.
It's a good idea to pick up a map and plan your route at the park's headquarters (which shuts at 6 p.m.) and visitor's centre. Nong Pak Chee and Mo Singto are two of the best places to see animals, while Khao Rom is the park's highest peak.