WEBPinus. Chiyoda City Office. Seimon Ishibashi, Imperial Palace. Chiyoda ( Japanese: 千代田区, Hepburn: Chiyoda-ku, IPA: [tɕijoda] ⓘ), known as Chiyoda City in English, [2] is a special ward of Tokyo, Japan. Located in the heart of Tokyo's 23 special wards, Chiyoda consists of the Imperial Palace and a surrounding radius of about a ...