Morioka Castle (Morioka-jō) is a castle in the city of Morioka, Iwate, Japan. Monument selected by the country. It was the place of residence of the Nanbu family of Morioka Han. It is also generally called Kozukata Castle (Kozukata-jō), but strictly saying this indicates another castle. Morioka Castle is a castle with a continuous enclosure built in a plain mount positioned on a granite hill in the central part of Morioka. The Kitakami River on the west and the Nakatsu River on the southeast were its natural outer moats. A secondary enclosure is positioned at the northern part of the inner citadel, and a red painted bridge spans over a moat that divides the two.