Ключевые слова: architecture, attraction, blue, city, crystal, destination, douro, downtown, europe, european, garden, greater porto, green, historic, historical, history, landmark, landscape, nature, old, oporto, outdoor, panorama, panoramic, port wine, porto, porto district, portugal, portuguese, public park, river, sky, summer, sunny, tourism, town, traditional, travel, trees, urban, view, water,