Hitachi Kokufu
Ishioka, Japan · built 700
The Hitachi Kokufu was the provincial capital of Hitachi Province in the late Nara period though Heian period. It was located in the Soja neighborhood of the city of Ishioka, Ibaraki Prefecture in the northern Kantō region of Japan. The ruins have been protected as a National Historic Site since 2010.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).