Ключевые слова: ancient, architecture, blue, bridge, building, city, cityscape, colorful, day, de, destination, douro, downtown, europe, european, famous, gaia, hill, historic, historical, history, house, landmark, landscape, nova, old, oporto, panorama, people, port, porto, portugal, portuguese, ribeira, river, scene, scenic, sky, skyline, street, tourism, tourist, town, traditional, transportation, travel, urban, view, vila, water,