 Like its neighbors Ginza and Tsukiji, Shiodome is built on what was originally marshland on the shore of Tokyo Bay.Shōgun Tokugawa Ieyasu issued an order in 1603 to fill in the area, and throughout the Edo period Shiodome housed the local residences of various "daimyōs" (feudal lords).The name "Shiodome", which translates to "keeping out the tide", probably referred to the shōgun's desire to isolate Edo Castle (now the Imperial Palace) from Tokyo Bay.