Tōdō Takatora
Construction was begun by the order of Tokugawa Ieyasu in 1608, and it was completed in six months. Ikeda Terumasa was in charge of the construction; the plan of the castle was done by Tōdō Takatora. It is said that 20 "daimyōs" were mobilized for the construction. The castle was so well designed that Ieyasu commanded that the "tenshu", or keep, not be constructed because he feared that it would be used as a base against him.