These historical parks preserve the remains of the three main cities of the Sukhothai Kingdom which flourished during the 13th and 14th century CE.

Inside are the remains of the royal palace and twenty-six temples, the largest being Wat Mahathat.

[citation needed] Si Satchanalai Historical Park (Thai: อุทยานประวัติศาสตร์ศรีสัชนาลัย) covers the ruins of Si Satchanalai, the second-most important town of the Sukhothai Kingdom.

It is on a bank of the Yom River near the modern town of Si Satchanalai in Sukhothai Province.

Religious sites on the west bank of the Ping River at Nakhon Chum are built of bricks and of smaller size.