Wakōshi

Wakōshi Station ( 和光市駅 Wakōshi-eki ? ) is a railway station in Wakō, Saitama , Japan, operated by the private railway operator Tobu Railway and Tokyo subway operator Tokyo Metro . It is the only Tokyo Metro station located in Saitama Prefecture . It is the westernmost station in the Tokyo subway network, and the northernmost Tokyo Metro station ( Nishi-Takashimadaira on the Toei network is farther north).