Nakhon Ratchasima, generally known as " Khorat ", is Thailand’s largest province situated on sprawling northeast plateau. Located approximately 260 kilometers northeast of Bangkok, the city itself serves as the gateway to the lower northeastern region. Covering an area of 25,494 square kilometers that is mainly plateaus and mountainous terrain, Khorat has fascinating traditions, charming hospitality, splendid natural scenery and awesome historical sites.

Some of the main attractions in Khorat are Khmer ruins. Scattered around the province, these products of ancient wisdom shines through time. One of the Thailand’s finest Khmer ruins can be seen here next to Mon and Lao sites. In addition, Khorat has an abundance of natural attractions in its forests, hills, wildlife and waterfalls that are easily accessible in locations such as Khao Yai National Park .

Khao Yai National Park is situated in the Sankambeng  Mountain Range, the southern prolongation of the Dong Phaya Yen Mountains, at the southwestern boundary of the Khorat Plateau.

This park lies largely in Nakornratchasima Province (Khorat), but also includes parts of Saraburi, Prachinburi and Nakorn Nayok  provinces.

The park is the second largest in Thailand. It covers an area of 2,168 square kilometers, including evergreen  forest and grassland. Its altitude mostly ranges from 400 to 1000 m above sea level. There are 3,000 species of plants, 320 species of birds  like red junglefowl  and green Peafowl and 67 species of mammals, including Asiatic black bears, Asian elephants, gaur, tigers, gibbons, Indian sambar deer, crab-eating macaque, Indian muntjac dholes , and wild pigs . Its waterfalls  include the 80 metre Heo Narok, and Haeo Suwat made famous from the film The Beach. Namtok Sarika is popular with the Thais.

Recent wildlife studies show that animal ranges, particularly the few resident tigers, are impacted by human activity near the center of the park. This study has not impacted the government's call for private lodging concessions within the park itself.