Ōtaka Castle

Ōtaka Castle - Credit: Wikimedia Commons

was a Sengoku period flatland-style Japanese castle located in what is now part of Midori Ward of the city of Nagoya, Aichi in the Tōkai region of Japan. The ruins, together with that of the detached fortresses of and have been collectively protected as a National Historic Site since 1944. Read more on Wikipedia

type: military structure
date from: Muromachi period

Source: en.wikipedia.org