Korakuen

Weekday departures: 1,016/day · Sat & holiday departures: 774/day

First / last train (weekday): 0:17 / 24:22

Busiest hour: 8:00–9:00 (85)

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0:00 ─ 23:00

Counts are departures in the timetable data shown on our live map.

• Marunouchi Line: Myogadani ⇄ Hongo-sanchome
• Namboku Line: Todaimae ⇄ Iidabashi

Kōrakuen Station's Marunouchi Line platforms opened on 20 January 1954 on the Teito Rapid Transit Authority's second subway line. A two-track stabling siding entered use on 5 August 1958 to absorb fleet growth from the Marunouchi Shinjuku extension. On 15 April 1994 the Metro M Kōrakuen building opened, the first commercial development built directly over a TRTA station. The Namboku Line platforms — built 37.5 m underground to thread between Tokyo Dome and adjacent building foundations — opened on 26 March 1996, making the station a transfer between the two lines. Tokyo Metro succeeded the TRTA on 1 April 2004, and a "Take Me Out to the Ball Game" Namboku-platform jingle was introduced on 13 March 2015.

The Marunouchi Line platforms sit 3.5 m above ground and the Namboku Line island platform is 37.5 m below it, giving Kōrakuen a vertical difference of about 41 m between platforms — the greatest of any single subway station in Tokyo.