Ключевые слова: america, american, architecture, backgrounds, blue, building, business, chicago, chicago illinois, city, city landscape, city life, city street, cityscape, contemporary, day, development, district, downtown, downtown district, famous, futuristic, icon, il, illinois, landmark, landscape, lifestyles, modern, no people, office, office building, outdoor, panoramic, park, public park, real estate, sky, skyline, skyscraper, street, travel, tree, united states, urban, urban skyline, usa, view,