Wat Si Chum, the most mysterious temple in Sukhothai, was built in the 13th century in the park and is the only eye-opening Buddha statue in Sukhothai. There are not many tourists here, and it is the best place to take pictures. The main building is the Buddha Hall behind the site of the Great Hall. There is a narrow gap on the front of the Buddha Hall, and the huge sitting Buddha is visible through a narrow gap. The sitting Buddha fingers are long and the carving is very meticulous. Now it is covered with gold leaves by devout Buddhists, which is contrasted with the gray theme part and is very characteristic.