Samnyeonsanseong Fortress (삼년산성)

3D Model

Boeun Samnyeonsanseong Fortress is a granite fortress located in Boeun-eup, Boeun-gun, Chungcheongbuk-do. It was built in the 13th year of Jabi Maripgan (470) of the Silla Dynasty and rebuilt in the 8th year of Soji Maribgan (486). In the Samguk Sagi (History of the Three Kingdoms), there is a record that it is called Samnyeonsanseong Fortress because it took three years to build it. In 『Sejong Annals of Geography』, it is recorded as Ohangsanseong Fortress, and in 『Sinjeungdonggukyeoji Seungnam』 and 『Chungcheong Provincial Map』, it is recorded as Ojeongsanseong (烏頂山城). It has been done.