Ключевые слова: architecture, building, city, cityscape, colorful, colourful, degraded, densely populated, destination, downtown, europe, european, historic, historical, interesting, landmark, location, old houses, oporto, panorama, panoramic, panoramic view, porto, portugal, portuguese, roof, rooftops, rua das aldas, scenery, scenic, skyline, stock exchange palace, tourism, town, townified, tradicional, traditional, travel, typical houses, urban, urban planning, vertical, view, viewpoint,