waterway at the blue hour

architecture beldorf blue building canal cargo carry city cityscape container convey danube dawn douro dusk editorial europe european evening export exterior germany giurgiu haul heritage historic holstein hour house import kiel landmark life light lighted lights night oldtown only oporto orange pier porto portugal reflection ribeira river romania scenery scenic schleswig schleswigholstein ship shipping sightseeing skyline street sunset tourism town trade transport travel unesco urban vessel water watercourse waterway wine world yellow