Sukhothai Historical Park is located in Sukhothai province, about 427 km north of Bangkok. Sukhothai was the capital of the first kingdom of Siam, flourishing between the mid 13th and mid 14th century AD. The kingdom of Sukhothai held a vast territory extending across the Moei, lower Yom, Ping, Nan, and upper Pa Sak river valleys. The area lays between two other kingdoms, Pagan in the west and Khmer in the east.