Ключевые слова: architecture, blue, boat, cathedral, city, cityscape, clerigos, colorful, culture, day, douro, downtown, dramatic, embankment, europe, hill, historic, historical, history, landmark, old, oporto, outdoors, panorama, porto, portos, portugal, portuguese, ribeira, river, roofs, scene, scenic, sky, skyline, sunset, tourism, tower, town, traditional, travel, urban, view, vintage, water,