Rainbow Bridge in Tokyo was built by Kawasaki Heavy Industries in 1987-1993. It’s a suspension bridge. There are lamps placed on the wires supporting the bridge, which are illuminated into different colors using solar energy obtained during the day. The illumination changes in color depending on events, days and hours for the enjoyment of viewers. Nice, isn’t it? While drivers can enjoy the beautiful scenery of Tokyo’s waterfront area and the night scene, people can cross the bridge on the walkways open to the public for free.