Gujō Hachiman Castle

Gujō Hachiman Castle - Credit: Wikimedia Commons

is a yamashiro, or "mountain castle", located on Hachiman Mountain in the city of Gujō, Gifu Prefecture, Japan. Its ruins were designated a Gifu Prefecture Historic Site in 1955. Read more on Wikipedia

type: military installation
date from: 1559

Source: en.wikipedia.org