History
Yotsuya-sanchōme Station opened on 15 March 1959 as a stop on the Marunouchi Line, beneath the intersection of National Route 20 (Kōshū Kaidō / Shinjuku-dōri) and Tokyo Metropolitan Route 319 (Gaien-Higashi-dōri) in Shinjuku. The station has two opposed side platforms on a single basement level, and originally only the Ikebukuro-bound (platform 2) side carried an elevator to street level; the Ogikubo-bound side was later fitted with a lift and ramp for barrier-free access. The Marunouchi Line was inherited by Tokyo Metro on 1 April 2004 when Teito Rapid Transit Authority was privatised, and PASMO support began on 18 March 2007. Switch-composed departure melodies were introduced when one-person operation started on the line.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
The station entrance sits directly above the Fire Museum, which dedicates its top floors to the Tokyo Fire Department's preserved engines and helicopters.