Located 9 kilometers south of town in Dong Lakhon Sub-district, Ban Dong Lakhon is a site where religious artifacts including fragments of Buddha images, seals, jewelry and ornaments were found. They are now on displayed at the Prachin Buri National Museum.

The findings from the excavation can be dated back to the Dvaravati Period. The settlement that was discovered was oval in shape, 600 meters wide and 700 meters long, with double city walls and culverts, a common Dvaravati style in Thailand’s central region.

The site was initially called "Mueang Lap Lae" which literally means mysterious town. Legend has it that Mueang Lup Lae was a town where the Queen of Cambodia resided. The town was hidden from the outside world by dense tall trees which usually prevented visitors from entering or exiting. Local people were able to hear royal classical Thai music played during the night. Thus they called the area “Dong Lakhon”. (Lakhon in Thai means a classical play) The Fine Arts Department registered Dong Lakhon as a national historical site on March 8, 1935.