Tsukuba Express
There is a connecting passage from the Tobu station to the Tokyo Metro station, and a connecting passage from the Tokyo Metro portion to the Toei portion. However, there are no direct connecting passages from the Toei portion to the Tobu portion or from the Tsukuba Express station to the rest of the station complex. Passengers wishing to transfer between the Toei and the Tobu stations have to walk at street level, while passengers transferring between the Tsukuba Express station and the rest of the complex must also walk at street level, as the Tsukuba Express station is located 600 meters to the west of the station complex.