Ключевые слова: abstract, architecture, background, beach, border, bridge, card, castle, city, cityscape, collage, collection, design, europe, fortress, frame, group, heap, heritage, installation, landmark, landscape, lisboa, lisbon, many, nature, ocean, outdoor, palace, paper, pattern, photo, picture, porto, portugal, portuguese, set, sightseeing, sintra, skyline, stack, summer, sunset, tourism, town, travel, urban,