A castle located in Kitakyushu City, Fukuoka Prefecture, Japan. Built in 1602, it was constructed by the famous Japanese warlord Motonari Mori during the Warring States period. This castle was originally built to strengthen the control of the Maori family in the Kyushu region. It is located by the river in the city center, surrounded by a wide moat and beautiful gardens. The architectural style combines the characteristics of traditional Japanese samurai castles and culture. It adopts a unique design of black exterior walls and golden roof, giving people a sense of solemnity and majesty. The castle has multiple floors and rooms inside, including a museum showcasing local history and culture.