The station consists of three separate island platforms serving two tracks for each respective line.

The Tokyo Metro Marunouchi Line platforms are located on the second basement ("B2F") level running approximately east to west, and the Fukutoshin Line platforms are located on the third basement ("B3F") level running approximately north to south.

[1] The station facilities of the Marunouchi Line were inherited by Tokyo Metro after the privatization of the Teito Rapid Transit Authority (TRTA) in 2004.

Another underground passage between the two stations was completed in 2012, situated below the Kōshū Kaidō.

The southern end of the Fukutoshin Line platform is linked to the Takashimaya Times Square complex by an underground passageway.