The Si Satchanalai Historical Park (Thai: อุทยานประวัติศาสตร์ศรีสัชนาลัย) is a historical park in Si Satchanalai district, Sukhothai Province, northern Thailand. The park covers the ruins of Si Satchanalai and Chaliang. Si Satchanalai, which literally means "City of good people", was founded in 1250 as the second center of Sukhothai Kingdom and a residence of the crown prince in the 13th and 14th centuries.