Ключевые слова: ancient, architecture, beautiful, blue, building, center, city, cityscape, color, colorful, douro, down, downtown, embankment, europe, exterior, facade, green, historic, historical, house, landmark, old, oporto, outdoor, panorama, panoramic, port, porto, portugal, portuguese, red, ribeira, river, roof, sky, street, summer, tiles, tourism, town, tradition, traditional, travel, typical, unesco, urban, view, world, yellow,