Bridges, dams, roads -- we explore Japan's public facilities and infrastructure. Take in a breathtaking panorama of Kobe at the top of the world's longest suspension bridge, 300m above the sea. Marvel at the subterranean cavern that protects the capital and surrounding area from flooding. Bungee jump at a dam deep in the mountains. Tour a colorful waste facility, walk through an underwater tunnel, and take one-minute ferry rides across rivers in Osaka Prefecture. Discover the joy of sightseeing with a twist.