Tameike-sannō Station
Lines. Tameike-sannō Station is served by the following two Tokyo Metro subway lines. The station is also connected by underground passageways to Kokkai-gijidomae Station, which is served by the Tokyo Metro Marunouchi Line (with this transfer being an appreciable walking time) and Tokyo Metro Chiyoda Line, and it is possible to transfer between the two stations without crossing through the ticket gates. Passengers. In fiscal 2019, the station had 150,922 passengers daily (Including Kokkai-gijidomae Station) Station layout. The station has two island platforms serving four tracks. History. The station opened on September 30, 1997 , as the southern terminus of the Namboku Line. The Ginza Line platforms opened at the same time. It is named after the nearby Tameike Crossing (which is itself named for a reservoir ["tameike"] which once covered the area) and the nearby Sanno Shrine (commonly known as the Hie Shrine). Both "Tameike" and "Sanno" are names of bus stops in the area. The station was originally to be named "Tameike Station" after the closer Tameike stop, but the Sanno name was added in order to satisfy Chiyoda Ward (as Tameike is associated with the Akasaka district of Minato Ward). Tameike-sannō