BTO - The 2-year archaeological excavation (2013 - 2014) carried out by the Institute of Social Sciences of the Southern Region and Binh Thuan Museum at Po Dam tower, Phu Lac commune, Tuy Phong district, brought out many types of architecture and relics from the underground that contain lots of information bringing new knowledge about the oldest temples and towers of architectural Champa from more than 1,300 years ago.