Ключевые слова: aerial, buildings, city, cityscape, day, de, district, douro, downtown, europe, european, famous, gaia, historic, houses, iberia, iberian, landmark, landscape, medieval, nova, old, old town, oporto, porto, porto portugal, portugal, portugese, portuguese, promenade, red, ribeira, scene, scenery, scenic, skyline, street, town, travel, vertical, view, wine, winery,