Ancient City of Si Mahosot
The Ancient City of Si Mahosot is a large Dvaravati-period archaeological site in Khok Thai Subdistrict, Si Mahosot District, Prachinburi Province, eastern Thailand. Enclosed by an oval earthen rampart and moat covering about 700 rai, it was occupied from late prehistory through the Dvaravati period (approximately 6th to 11th century). The site contains remains of religious structures, ancient ponds including Sa Morakot, and traces of early urban planning, representing one of the most significant ancient settlements in the region.