Hachimanbayashi Government Office Site
Nagaoka, Japan
The Hachimanbayashi Kanga ruins (, Hachimanbayashi kanga iseki) is an archaeological site containing the ruins of an Asuka period jōsaku-style Japanese castle located in what is now the Shimazaki neighborhood of the city of Nagaoka, Niigata in the Hokuriku region of Japan. The site was designated a National Historic Site of Japan in 1995.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).