Ключевые слова: aerial, architecture, boat, bridge, building, center, city, cityscape, colorful, day, dom, douro, europe, european, historic, historical, history, landmark, luis, miniature, old, oporto, outdoor, over view, porto, portugal, portuguese, river, roof, scene, sharpness, skyline, summer, tilt shift, tourism, touristic, town, travel, urban, view, wallpaper, water, wide,