Gyeonhwonsanseong Fortress
Jangam-ri, Hwabuk-myeon, Sangju-si, Gyeongsangbuk-do
Built along the ridge of a mountain, this fortress is named Gyeonhwonsanseong after Gyeon Hwon, who is said to have constructed it. Gyeon Hwon, born the son of a farmer, served as a Silla general and…