|Morioka, Iwate, Japan|
|Type||hirayama-style Japanese castle|
|Owner||city of Morioka|
|Condition||National Historic Sites of Japan|
|Built by||Nanbu clan|
Morioka Castle (盛岡城 Morioka-jō) is a hirayama-style Japanese castle constructed in 1611. It was the seat of the Nanbu clan, a tozama daimyō clan who ruled over Morioka Domain, Mutsu Province in the Tōhoku region of northern Japan. The castle is located in what is now central Morioka, Iwate Prefecture, Japan. It was also referred to as Kozukata Castle (不来方城 Kozukata-jō), but strictly speaking this name pertains to the predecessor of Morioka Castle on the same site.
The confluence of the Kitakami River and the Nakatsu River was of strategic importance in control of river traffic in central Ōshū. The location of the castle was also intended to control traffic on the Ōshū Kaidō highway from the capital to the northern end of Honshū.
Because of its strategic geographic position, the area around Morioka had been regarded as the centre of northern Ōshū since the construction of nearby Shiwa Castle by the Yamato dynasty in the early Heian period. The area was later contested between the Abe clan and the Kiyohara clan in the Former Nine Years War, and it is believed that the first fortification had been erected on this site by the Kiyohara clan. The Kiyohara were destroyed by the Northern Fujiwara of Hiraizumi, who in turn were destroyed by the Minamoto clan of the Kamakura shogunate. The area then came under the control of the Kudo clan, who were retainers of the Minamoto. During the Muromachi period, the Kudo clan was divided between supporters of Emperor Go-Daigo and supporters of the Ashikaga clan, and were thus displaced by the Nanbu clan, who had already been established to the north.
During the late Sengoku period, Nanbu Nobunao pledged fealty to Toyotomi Hideyoshi at the Siege of Odawara (1590) in 1590 was confirmed as daimyō over all of the Nanbu territories, including lands around the site the site of old Kozukata Castle in Morioka. He decided to move his seat south from its former location at Sannohe Castle and to erect a new castle at Morioka. The design of the castle may have been influenced by Nagoya Castle in Hizen Province, which he saw during the Japanese invasions of Korea. His holdings were confirmed after the Battle of Sekigahara by Tokugawa Ieyasu, and Morioka remained the seat of the Nanbu clan until the Meiji Restoration.
The actual construction work on Morioka Castle was supervised by his Nanbu Nobunao's son, Nanbu Toshinao, who later became the 1st daimyō of Morioka Domain, but the castle was not completed until 1633, during the reign of Nanbu Shigenao, the 2nd daimyō. However, its three-story donjon burned down only one year later, and was never rebuilt.
In 1906, the site was opened to the public as Iwate Park, with gardens laid out by modern park designer Yasuhei Nagaoka, and are a popular spot for viewing the sakura blossoms in spring. The caste site was donated by the Nanbu clan to the city of Morioka in 1934.
Structures and gardens
Morioka Castle occupies a long and narrow elliptically-shape hill approximately 300 meter long by 100 meter wide. The southeastern side faces the Nakatsu River, and formerly the main stream of Kitakami River protected the western side. As granite was readily available in the vicinity, most of the ramparts were faced in stone.
The Inner bailey is a square area approximately 60 meters on a side, with a large gate on its eastern end. In the southern corner was a three-story yagura, which served as the donjon after the main tower was lost in a fire in 1634. The remainder of the area was occupied by the palace and administrative structures of the Nanbu clan.
A secondary enclosure is positioned at the northern part of the inner citadel, and a red-painted bridge spans a moat that divides the two enclosures. There is a tertiary enclosure positioned at the northern end; a Koshi no kuruwa (腰曲輪), a Awaji maru (淡路丸) and a Sakakiyama kuruwa (榊山曲輪) enclose the inner citadel. Each area is protected by a huge masugata style composite gate.
The castle has a stone wall constructed in white granite, which stands out among the castles of the Tōhoku region, most of which having earthen walls. All of the structures of the castle were dismantled during the early Meiji period, with the exception of a storehouse with thick mortar walls, reconstructed in the interior part of the castle, and a gate which is now relocated to a Zen temple within the city.
The surrounding Iwate Park (岩手公園 Iwate Kōen) (now known as Morioka Castle Ruins Park (盛岡城跡公園 Morioka-jō ato kōen)) contains a monument inscribed with a poem of Kenji Miyazawa, and also a monument in memory of Takuboku Ishikawa inscribed with one of his poems:
Kozukata no oshiro no kusa ni nekorobite sora ni suwareshi jū-go no kokoro
(English: I laid down on the grass of the Kozukata Castle, absorbed by the sky; my heart of fifteen)
- Schmorleitz, Morton S. (1974). Castles in Japan. Tokyo: Charles E. Tuttle Co. pp. 144–145. ISBN 0-8048-1102-4.
- Motoo, Hinago (1986). Japanese Castles. Tokyo: Kodansha. p. 200 pages. ISBN 0-87011-766-1.
- Mitchelhill, Jennifer (2004). Castles of the Samurai: Power and Beauty. Tokyo: Kodansha. p. 112 pages. ISBN 4-7700-2954-3.
- Turnbull, Stephen (2003). Japanese Castles 1540–1640. Osprey Publishing. p. 64 pages. ISBN 1-84176-429-9.
Media related to Morioka Castle at Wikimedia Commons
- Agency for Cultural Affairs (in Japanese)