History
Musashi-Seki Station opened on 16 April 1927 on the Seibu Shinjuku Line in Nerima Ward, the westernmost station within the Tokyo ward area. Operated by Seibu Railway, it lies 14.1 km from the Seibu-Shinjuku terminus between Kami-Shakujii and Higashi-Fushimi. A bridge-style station building entered service on 28 August 1966 after the platform layout was reworked from a single island into two side platforms. The north entrance and Seibu Musashi-Seki Station Building opened on 15 December 1978, with later refurbishments adding step-free access by 2005. Station numbering took effect in fiscal 2012, designating the stop SS14.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Where the English and Japanese sources differ, this account follows the Japanese source.
Notes
Honryūji Temple, a short walk north of the station, has hosted the Seki-no-Boroichi flea market every December since 1751, an event registered as an intangible folk-culture asset of Nerima Ward.