Edo Castle was built in 1457 by Ōta Dōkan in what is now the Chiyoda ward of Tokyo, but was then known as Edo, Toshima District, Musashi Province. Tokugawa Ieyasu established the Tokugawa shogunate here, and as the residence of the shogun and location of the bakufu, it functioned as the military capital during the Edo period of Japanese history. Along with the Meiji Restoration, it became the residence of the Emperor of Japan, or in Japanese kōkyo. Some moats, walls and ramparts survive. However, during the Edo period, the grounds were much more extensive, with Tokyo Station and the Marunouchi section of the city lying within the outermost moat. It also encompassed Kita-no-maru Park, the Nippon Budokan Hall and other landmarks of the area.