3. Sydney Harbour Bridge, Sydney, Australia – A steel through arch bridge across Sydney Harbour. The bridge carries roads for vehicles and railroads as well as bicycle and pedestrian traffic between the North Shore and the central business district of the city. The beautiful view of the bridge with the harbour and the Sydney Opera House form the so familiar and wonderful skyline of the city. It is a symbol of Sydney and Australia. The bridge is nicknamed “The Coathanger” by the local residents because of its arch-based design