WEBKitakyushu. 北九州市. Designated city. City of Kitakyushu [1] Clockwise from top left: the Riverwalk shopping center; Kokura Castle; Mojiko Station; the former Higashida blast furnace; a night view of Kokura from Mount Adachi; and the Tanga Market in Kokura. Flag. Emblem. Location of Kitakyushu in Fukuoka Prefecture. Kitakyushu. Location in Japan.