wards

Special wards (特別区, tokubetsu-ku) are a special form of municipalities in Japan under the 1947 Local Autonomy Law. They are city-level wards: primary subdivisions of a prefecture with municipal autonomy largely comparable to other forms of municipalities.
Although the autonomy law today allows for special wards to be established in other prefectures, to date, they only exist in Tokyo which consists of 23 special wards and 39 other, ordinary municipalities (cities, towns, and villages). The special wards of Tokyo occupy the land that was Tokyo City in its 1936 borders before it was abolished under the Tōjō Cabinet in 1943 to become directly ruled by the prefectural government, then renamed to "Metropolitan". During the Occupation of Japan, municipal autonomy was restored to former Tokyo City by the establishment of special wards, each with directly elected mayor and assembly, as in any other city, town or village in Tokyo and the rest of the country.
In Japanese, they are collectively also known as "Wards area of Tokyo Metropolis" (東京都区部, Tōkyō-to kubu), "former Tokyo City" (旧東京市, kyū-Tōkyō-shi), or less formally the 23 wards (23区, nijūsan-ku) or just Tokyo (東京, Tōkyō) if the context makes obvious that this does not refer to the whole prefecture. Today, all wards refer to themselves as a city in English, but the Japanese designation of special ward (tokubetsu-ku) remains unchanged. They are a group of 23 municipalities; there is no associated single government body separate from the Tokyo Metropolitan Government which governs all 62 municipalities of Tokyo, not only the special wards.

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