Miyake-Odoi Site

Miyake-Odoi Site - Credit: Wikimedia Commons

is an archaeological site with the traces of a Muromachi period fortified residence, located in what is now the Miyake neighborhood of the city of Masuda, Shimane Prefecture, in the San'in region of western Japan. Its ruins been protected by the central government as a National Historic Site since 2004 together with the Nanao Castle ruins as the "Masuda clan fortification ruins". Read more on Wikipedia

type: military installation
date from: 1193

Source: en.wikipedia.org