The Kōriyama ruins (郡山遺跡, Kōriyama iseki) is an archaeological site with the ruins of a Nara period government office complex, temple and temple ruins located in what is now part of Taihaku-ku in the city of Sendai, Miyagi prefecture in the southern Tōhoku region of northern Honshu, Japan. It has been protected by the central government as a National Historic Site since 2006.[1] | ||||||