Ключевые слова: ancient, architecture, bairro da ribeira, boat, bridge, building, city, cityscape, douro, douro river, downtown, europe, european, famous, historic, historical, landmark, landscape, oporto, outdoors, panorama, panoramic, ponte luis 1, port, porto, portugal, portuguese, river, scene, skyline, tourist attraction, town, travel destination, view, water, widescreen,