History
Nishi-Sugamo Station opened on 27 December 1968 as a Toei Subway Line 6 stop in Toshima Ward, Tokyo. The route was renamed the Mita Line on 1 July 1978, and PASMO IC card service began on 18 March 2007. The station was built unusually deep beneath the Nishi-Sugamo crossroads — where National Route 17 meets Meiji-dōri (Tokyo Metropolitan Route 305 / National Route 122) — because a never-built overpass was planned for the road junction, and the station's structural design had to accommodate the foundations of that hypothetical bridge. A second ticket gate that once existed on the Sugamo side has been sealed off; the corridor and ground-level stairs remain as emergency exits but are otherwise inaccessible to passengers.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.