History
Awajichō Station opened on 20 March 1956 with the inaugural Ochanomizu-to-here section of the Marunouchi Line, in Kanda-Awajichō, Chiyoda, Tokyo. With the planned construction of Toei Subway Line 10 (today's Shinjuku Line) running alongside, a major rebuild began in May 1975 and was completed in March 1980, when the station became a transfer point to Toei's Ogawamachi Station. The work, mostly contracted to the Tokyo Metropolitan Bureau of Transportation and costing roughly 1.134 billion yen, extended the platform 32 metres towards Ikebukuro, widened the concourse and rebuilt much of the back-of-house. On 1 April 2004 the Eidan subway authority was privatised and the station passed to Tokyo Metro.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
Switch-composed departure melodies were installed when the line shifted to one-person operation, with "Safety" by Takayoshi Tanimoto on track 1 and "Eki Suite" by Naoya Fukushima on track 2.