Ключевые слова: architecture, bridge, building, center, city, cityscape, colorful, day, destination, dom luis, dom luis i bridge, douro, downtown, europe, european, facade, famous, historic, historical, house, landmark, old, oporto, porto, portugal, portuguese, quay, river, road, roof, scene, scenery, scenic, sidewalk, sky, skyline, street, sunny, tourism, tourist, town, townscape, traditional, transport, travel, view, water, waterfront,