The Hohenzollern Bridge crossing the Rhine in Cologne, Germany, with the Cologne Cathedral in the background. The bridge is a tied-arch railway bridge, as well as a pedestrian bridge. Originally built in 1911, it survived numerous Allied bombings in World War II, only to be destroyed by German engineers as the war drew to a close. Reconstruction began soon after and the bridge was opened to pedestrian traffic in 1948 and completely opened in 1959.Photo: Thomas Wolf