Ключевые слова: abstract, architecture, background, blue, building, buildings, business, center, city, cityscape, concept, construction, corporate, design, engineering, financial, frame, frankfurt, futuristic, germany, glass, graphic, hitech, image, landmark, lines, mirror, modern, office, pattern, scene, shape, shiny, sky, skyscraper, steel, striped, structure, style, technology, texture, tower, town, urban, wallpaper,