||Tokugawa Ieyasu establishes Shogunate Government (Tokugawa Shogunate) in the town of Edo. Edo period begins.
||Major fire in Edo claims over 100,000 lives.
||Seki Takakazu publishes Hatsubi-Sanpo, presenting solutions to algebraic equations.
||Firefighting organizations established.
||First population census conducted (Edo’s population about 1.3 million).
||Koishikawa Yojosho established as the first free hospital by the government.
||Treaty of Peace and Amity between Japan and the U.S. concluded (Japan ends seclusion policy).
||Tokugawa Yoshinobu, last shogun of the Tokugawa Shogunate, resigns and returns governing power to the Emperor.
||New Meiji government established. Meiji era begins.
Edo renamed Tokyo and becomes a prefecture.
||First railway line opens between Shimbashi, Tokyo and Yokohama.
||First Industrial Exhibition held at Ueno Park.
||First Tokyo-fu (prefecture) Conference held.
||First zoo opened in Ueno.
||Cabinet system established. Ito Hirobumi appointed as first Prime Minister.
||Municipal organization system introduced.
||Constitution of the Empire of Japan promulgated. Tokyo City and 15 wards established.
||Jurisdiction of three Tama Areas transferred from Kanagawa Prefecture to Tokyo-fu.
||Tokyo-fu Government Building completed in Marunouchi.
Sino-Japanese War begins (ends 1895).
||Russo-Japanese War begins (ends 1905).
||Taisho era begins.
||World War I begins (ends 1918).
Red brick and tile Tokyo Station completed.
||Japan becomes one of the original members of the League of Nations.
First census conducted. Population of Tokyo-fu rapidly increases and becomes 3,699,428.
||Great Kanto Earthquake claims the lives of around 140,000 people and destroys about 300,000 houses.
||Universal male suffrage enacted.
Radio broadcasting services launched.
||Showa era begins.
||First subway line opens between Asakusa and Ueno.
||Tokyo Airport opens in Haneda.
||Tokyo's resident population reaches 6.36 million (almost the same as New York City and London).
||Port of Tokyo opens.
Pacific War begins.
||Metropolitan administration system established.
||March 10: Tokyo hit by heaviest air raid since beginning of war.
Pacific War ends.
Tokyo’s population drops to 3.49 million (half of 1940 levels).
||Constitution of Japan promulgated.
New local self-government system introduced. Seiichiro Yasui elected first Governor of Tokyo by popular vote.
Tokyo launches 23 special-ward administration system.
||Treaty of Peace with Japan and Japan-U.S. Security Treaty concluded.
||Television broadcasting services launched.
||Japan joins United Nations.
||Ryotaro Azuma elected Governor of Tokyo.
||Tokyo population reaches 10 million.
Start of high economic growth period.
||Olympic Games held in Tokyo.
||Ryokichi Minobe elected Governor.
||Ogasawara Islands returned to Japan.
||Tokyo Metropolitan Pollution Control Ordinance enacted.
||Oil crisis occurs.
||First public election of ward mayors conducted.
||Fifth G7 Economic Summit Meeting held in Tokyo.
Shunichi Suzuki elected Governor.
||Long-Term Plan for the Tokyo Metropolis announced.
||Heisei era begins.
||Tokyo Metropolitan Government Buildings move to Shinjuku from Marunouchi.
||Rainbow Bridge opened.
||Yukio Aoshima elected Governor.
||Long-Term Strategies for a Resident-Friendly Tokyo announced.
||Shintaro Ishihara elected Governor.
Fiscal Reconstruction Promotion Plan announced.
Say No to Diesel Vehicles! campaign launched.
||Responsibility of refuse collection and disposal transferred to wards.
Miyake Island erupts and all residents evacuated.
||Asian Network of Major Cities (ANMC21) holds 1st Plenary Meeting.
||Accommodation tax introduced.
Tokyo City Promotion Campaign sends first mission to Europe.
||Diesel Vehicle Emissions Regulations introduced in Greater Tokyo Area.
||ShinGinko Tokyo Bank established.
||New Tokyo Metropolitan University begins operations.
||Tokyo selected as Japan’s applicant city for the 2016 Olympics.
Tokyo's Big Change: The 10-Year Plan announced.
||Inaugural Tokyo Marathon held.
Tokyo announces Japan’s first financial statements based on the new public accounting system.
Green Tokyo Fundraising Campaign launched.
||Tokyo selected as a candidate city for the 2016 Olympic and Paralympic Games.
C40 Tokyo Conference on Climate Change held.
||Rio de Janeiro selected to host the 2016 Olympic Games.
||Haneda Airport puts new runway and international terminal into service.
||Great East Japan Earthquake occurs.
Ogasawara Islands inscribed on UNESCO’s World Heritage List.
Tokyo announces its bid to host the 2020 Olympic and Paralympic Games.
Tokyo Vision 2020 formulated.
||Naoki Inose elected Governor.