Azuchi Castle - History

History

Unlike earlier castles and fortresses, Azuchi was not intended to be solely a military structure, cold, dark, and foreboding. Nobunaga intended it as a lavish mansion, which would impress and intimidate his rivals, not only with its defenses, but with its lavish apartments and decorations, and flourishing town and religious life. The keep, called tenshukaku (or tenshu), rather than being the center of the castle's defences, was a seven-story building containing audience halls, private chambers, offices, and a treasury, as though it were a royal palace. In addition to being one of the first Japanese castles with a tower keep, Azuchi was unique in that its uppermost story was octagonal. In addition, the facade of Azuchi, unlike the solid white or black of other castles, was colorfully decorated with tigers and dragons.

There were five main militaristic features of Azuchi Castle that differentiated it from earlier castle designs. Firstly, it was a massive structure, with the walls of the castle ranging from 18 feet to 21 feet in thickness. The second feature of Azuchi Castle is the predominant use of stone. The walls were constructed from huge granite stones fitted carefully together without the use of mortar. A third innovation of the Azuchi Castle was the high central tower, or donjon. The tower allowed for increased visibility for the use of guns against an opposing force. Builder’s plans for the castle show the donjon to be 138 feet tall, with seven levels. Fourthly, Azuchi Castle had irregularly formed inner citadels. These inner citadels gave defenders ample defensive positions against intruders. The location of Azuchi Castle was also a novel feature. Whereas most Japanese castles found the most advantegous position was at the base of mountain surrounded by dense vegetation (which would allow cover for an enemy), Azuchi Castle was built on a plain to give a wide view of an approaching enemy.

Nobunaga desired a full castle town, and built well-defended homes for his generals, a Jōdo-shū Buddhist temple called Jōgon-in, and a number of homes for commoners a short distance away on the shore of the lake. However, he had trouble convincing people to move into these homes at first. In the summer of 1577, he issued a municipal charter, guaranteeing residents immunity from taxes, building or transport levies, and moratoria, and forced all travelers on the Nakasendō highway to stop in the town overnight for lodging, thus bringing business to his town's innkeepers. By 1582, the town's inhabitants numbered roughly 5,000.

In addition to welcoming many of Nobunaga's powerful political guests, such as Tokugawa Ieyasu and Niwa Nagahide, Azuchi castle also hosted an event in 1579 which has come to be known as the Azuchi religious debate (安土宗論, Azuchi shūron), taking place between leaders of the Nichiren and Jōdo-shū sects of Buddhism.

In the summer of 1582, just after Nobunaga's death at Honnō-ji, the castle was attacked by the forces of Akechi Mitsuhide, Nobunaga's betrayer. The castle was set aflame, though some accounts claim this might have been the work of looting townspeople, or of one of Nobunaga's sons. Mitsuhide, therefore, never managed to occupy the castle.

The Azuchi-Momoyama Period of Japanese history takes its name, in part, from this castle.