Khao Luang is the first historical national park in Thailand because of historical evidence in the Sukhothai region and nature maintenance. There are many interesting things to study. Khao Luang is located in the Mueang Sukhothai District, Khiri Mat District, and Ban Dan Lan Hoi District with an area of 341.144 square kilometers. It was established as a national park on 27th October 1980 and change its name to Ramkhamhaeng National Park to commemorate King Ramkhamhaeng, the King who built this city.