Si Mahosot Ancient Towns Located at Ban Khok Wat, Tambon Khok Peep, these sites were constructed in the Davaravati Period, with oval shape, and the area of about 700 Rai. There are moats, earth walls, and more than 100 interesting ancient venues. Most of the archeological materials are related to Hinduism.

The most important site is in the center of town. Made from laterites, many materials found were in Lop Buri, Ayutthaya, and Rattanakosin Periods such as Buddha images and pottery. Also, there is Phu Khao Thong – a round-shape stupa in the Davaravati Period. Another venue is the Ancient Site No. 25 made from laterite, with rectangular in shape. Sa Kaeo Ancient Site is a square pond, located in the south-west of Mueang Si Mahosot. On the walls of the pond, there are lintels showing 41 animals in the legend. It was believed that the water from this pond is sacred, use in Buddhist ceremony. Traveling: From Prachin Buri town, use highway No.319 for about 20 kilometres, then turn left to highway no. 3070 for one more kilometre, the ancient town is on the right.