Thailand’s first National Park is also its second largest, and certainly one of its best! Khao Yai National Park spreads to four different provinces with the bulk of its 2,100 square kilometers in Nakhon Ratchasima. The park has a variety of terrains from deciduous forest to savannah and houses some 3,000 species of plant. Wildlife in the park is as varied as its terrain and it is home to around 200 wild elephants. The park also houses tigers, gibbons, bears, deer, bats, wild pigs, and a major bird population including a wide variety of hornbills.