Sydney Harbor Bridge at night, Australia.

sydney new south wales australia bridge man made structure sydney harbor bridge river famous place architecture sydney harbor dusk cityscape urban skyline sunset water sky night city built structure harbor sydney opera house urban scene travel travel destinations outdoors twilight porto district portugal tourism transportation douro river blue scenics sea building exterior travel locations usa downtown district reflection australian culture nautical vessel international landmark architecture and buildings no people porto portugal cloud sky day steel panoramic color image the douro