Ключевые слова: abstract, abstract backgrounds, architecture, art, background, blue, building, built structure, business, city, computer graphic, concept, construction industry, copy space, creative, curve, design, digitally generated image, empty, facade, futuristic, geometric, geometric shape, geometry, graphic, horizontal, idea, illustration, image, indoor, line, minimal, modern, no people, pattern, shadow, shape, simplicity, sky, skyscraper, structure, technology, textured, three dimensional, threedimensional, urban, window,