Ключевые слова: aerial, architecture, attraction, bridge, building, cathedral, city, cityscape, clerics, clerics tower, dawn, destination, district, district of porto, dom luis, dom luis i, dom luis i bridge, douro, douro river, downtown, episcopal palace, europe, european, harbor, high angle, high angle view, historic, if, if from the port, landmark, lus, north, port, port district, porto cathedral, portugal, portuguese, river, sky, skyline, stream, sun, sunrise, sunset, tourism, tower, travel, twilight, view,