Morioka Castle Ruins — Stone Walls & Cherry Blossoms

Morioka Castle (盛岡城跡公園, now Iwate Park) was built in the early 17th century by the Nanbu clan, who ruled the Morioka Domain for 260 years during the Edo period. The castle buildings were demolished after the Meiji Restoration (1874), but the impressive stone walls remain intact — some of the finest examples of Edo-period castle masonry in northern Japan. The walls rise 8–10 meters, constructed from massive granite blocks fitted without mortar. The ruins occupy a hill overlooking the confluence of three rivers (Kitakami, Nakatsu, Shizukuishi), providing natural defense. Today the grounds are a public park popular for cherry blossom viewing (400+ trees bloom late April), autumn foliage (November), and summer festivals. The stonework includes steep staircases, curved walls, and corner constructions that demonstrate advanced engineering. Information boards explain the original castle layout and Nanbu clan history.