Ключевые слова: arch, architecture, blue, boat, bridge, building, city, cityscape, construction, daytime, dom, douro, downtown, europe, european, famous, hill, historic, historical, history, landmark, luis, luiz, metal, old, oporto, outdoor, panorama, place, ponte, port, porto, portugal, portuguese, river, sky, skyline, steel, street, structure, sunny, tourism, town, travel, urban, view, vila nova de gaia, water, wine,