Tokyo (;
Japanese: 東京, Tōkyō,
[toːkʲoː] (
listen)), officially the Tokyo Metropolis (東京都, Tōkyō-to), is the
capital and
most populous city of
Japan. Formerly known as
Edo, its metropolitan area (13,452 square kilometers or 5,194 square miles) is the most populous in the world, with an estimated 37.468 million residents ; the city proper has a population of 13.99 million people. Located at the head of
Tokyo Bay, the prefecture forms part of the
Kantō region on the central coast of
Honshu, Japan's largest island. Tokyo serves as
Japan's economic center and is the seat of both the
Japanese government and the
Emperor of Japan.
Originally a fishing village named
Edo, the city became politically prominent in 1603, when it became the seat of the
Tokugawa shogunate. By the mid-18th century, Edo was one of the most populous cities in the world with a population of over one million people. Following the
Meiji Restoration of 1868, the imperial capital in
Kyoto was moved to Edo, which was renamed "Tokyo" (
lit. '
Eastern Capital'). Tokyo was devastated by the
1923 Great Kantō earthquake, and again by
Allied bombing raids during World War II. Beginning in the 1950s, the city underwent rapid reconstruction and expansion efforts, going on to lead the
Japanese economic miracle. Since 1943, the
Tokyo Metropolitan Government has administered the prefecture's
23 special wards (formerly
Tokyo City), various commuter towns and suburbs in its western area, and two outlying island chains known as the
Tokyo Islands.
Tokyo is the second-largest urban economy worldwide by
gross domestic product after
New York City, and is categorized as an
Alpha+ city by the
Globalization and World Cities Research Network. It is also Japan's leading business hub as part of an industrial region that includes the cities of
Yokohama,
Kawasaki, and
Chiba. , Tokyo is home to 37 companies of the
Fortune Global 500. In 2020, the city ranked fourth on the
Global Financial Centres Index, behind only
New York City,
London, and
Shanghai. Tokyo is home to the world's tallest tower,
Tokyo Skytree, and the world's largest underground floodwater diversion facility, the
Metropolitan Area Outer Underground Discharge Channel (located in
Kasukabe, Saitama, a suburb of Tokyo). The
Tokyo Metro Ginza Line, opened in 1927, is the oldest underground metro line in
East Asia. Recognized as one of the most livable cities in the world, Tokyo was tied fourth with
Wellington in the 2021
Global Livability Ranking. (
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