The Nagoya Castle is a large castle built during the Warring States Period in Japan. It is a military-related building and watchtower. At the same time, it is also the place where the city owner lives. The castle tower is the center of the castle. It is not only a strong military defense facility, but also a symbol of the political name and status of the local name or city owner. In Japan's current castle tower, Himeji Castle, Osaka Castle, and Nagoya Castle are more famous.