The Oc-Eo Remains Site is located in the mountainous region of Sap – Ba The in Thoai Son District, An Giang Province; 30km from Long Xuyen. It is a vast ancient vestige of the Phu Nam Kingdom, a powerful nation in the Southeast Asia about two thousand years ago. In the Middle Ages, the ancient citadel of Oc-Eo used to be a commercial center. The Oc-Eo Remains Site was rediscovered when the soil was dug out to build the Ba The Channel. The site has an area of 4,500ha still hold many mysteries to researchers and archaeologists. Nowadays, the Oc Eo Remains Site not only receives many researchers and archeologists who come to study and investigate but also attracts many local and foreign tourists who come to visit and study about a booming era of the former An Giang.