Tokyo Imperial Palace Tour - Nijubashi Bridge

Tokyo Imperial Palace Tour - Nijubashi Bridge
https://www.env.go.jp/garden/kokyogaien/english/point01.html

'There are two bridges in front of the Imperial Palace main gate, the iron bridge that can be seen in the background from the plaza, called the "Seimon-tetsubashi Bridge," and the stone bridge in the foreground, which is called the "Seimon-ishibashi Bridge." '
https://visit-chiyoda.tokyo/app/en/spot/detail/242