Utthayan Mueang Kao Pichit. The park features an ancient town dating back to more than 900 years. Most of the structures discovered were built during the Sukhothai and Ayutthaya periods. In the town centre is Wat Phra Si Rattana Mahathat (วัดพระศรีรัตนมหาธาตุ) with its large bell-shaped Chedi inside of which have been found hundreds of votive tablets.