Awesome Search Japan

Castle in Ōshū,Iwate

1．Isawa Castle
Isawa Castle (胆沢城, Isawa-jō) was an early Heian period jōsaku-style Japanese castle located in what is now part of the city of Ōshū, Iwate in the Tōhoku region of far northern Honshu, Japan. The site was proclaimed a National National Historic Site in 1922.[1]
Wikipedia  detail  
2．Shirotoridate ruins
Shirotoridate ruins (白鳥舘遺跡, Shirotoridate iseki) was a late Heian period and Kamakura period settlement in what is now part of the city of Ōshū, Iwate Prefecture, Japan. It is protected by the central government as a National Historic Site.[1]
Wikipedia  detail