Konosumiyama Castle

Konosumiyama Castle - Credit: Wikimedia Commons

was a Muromachi to Sengoku period Japanese castle located in the Izushi neighborhood of the city of Toyooka, Hyōgo Prefecture, Japan. Its ruins, along with the ruins of nearby Arikoyama Castle have been protected as a National Historic Site since 1934 under the designation "Yamana clan castle ruins". Read more on Wikipedia

type: military installation
date from: 15th century

Source: en.wikipedia.org