Yesan Imjonseong
San 28, Masa-ri, Gwangsi-myeon, Yesan-gun, Chungcheongnam-do
Yesan Imjonseong is a Baekje-era mountain fortress built on Mount Bongsusan near the western side of Yedang Reservoir, and it is designated as Yesan's Fourth Scenic View. With stone outer walls and a…