Hitachi Kokufu ruins - Credit: Wikimedia Commons
The 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 KantÅ region of Japan. The ruins have been protected as a National Historic Site since 2010. Read more on Wikipedia
Source: en.wikipedia.org