Sunpu Castle
After the Siege of Odawara (1590), Toyotomi Hideyoshi forced the Tokugawa to exchange their domains for the provinces of the Kantō region, and reassigned Sunpu Castle to one of his retainers, Nakamura Kazuichi. However, after the defeat of the Toyotomi at the Battle of Sekigahara, Tokugawa Ieyasu recovered his former domains, and made Sunpu Castle his home after he formally retired from the position of Shōgun.