Ключевые слова: beautiful, blue, boat, building, buildings, center, city, cityscape, cloudy, douro, down, downtown, embankment, february, green, historic, historical, house, january, landmark, landscape, market, old, oporto, outdoors, panorama, panoramic, park, part, porto, portugal, red, reflection, ribeira, river, roof, roofs, ship, sky, summer, tile, tourism, town, tree, vessel, water, white, winter, yellow,