Okayama Castle is located in Okayama Prefecture. It is also called Kuro Castle because the wall panels of the castle tower are painted black. It is also called Jinku Castle because of the golden roof and the golden animal head tiles on the top of the watchtower. From the Warring States Period to the Meiji Restoration, it was successively owned by the Ukita family, the Kobayakawa family, and the Ikeda family. The castle tower, the Tsukimi Turret, the Nishite Turret, and the Ishiyama Gate, which were built in the Momoyama style, have all been rated as national treasures of Japan. Okayama Castle is a five-story, six-story building and is one of the oldest castles in Japan.