History
Ōtemachi Station opened on 20 July 1956 beneath the Tokyo Sankei Building as a Marunouchi Line stop. Tōzai Line platforms followed on 1 October 1966, the Chiyoda Line on 20 December 1969, the Toei 6-go Line (renamed Mita Line in 1978) on 30 June 1972, and the Hanzōmon Line on 26 January 1989 — giving Ōtemachi five lines, more than any other station on the Tokyo subway network. The four Tokyo Metro lines passed to the new operator at the April 2004 privatisation, PASMO began on 18 March 2007, and Odakyū Romance Car through-service to the Chiyoda Line platforms started on 15 March 2008. Departure melodies were rolled out across all platforms between 2015 and 2018.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
The station has eight numbered platforms — the most of any subway station in Japan — and its layout, viewed from above, traces a rough letter P linking the five lines in clockwise order.