Ключевые слова: architecture, background, beautiful, bird, blue, bridge, building, city, cityscape, color, colorful, destination, dom, douro, downtown, europe, european, famous, historic, historical, history, house, landmark, luis, nature, old, oporto, over, port, porto, portugal, portuguese, river, scene, scenery, scenic, seagull, seagulls, silhouette, sitting, sky, skyline, sunset, tourism, town, travel, urban, view, water, white,