Ключевые слова: 2011, america, angle, architecture, blue, building, business, capital, center, chicago, city, cityscape, construction, corporate, district, downtown, estate, famous, financial, glass, high, illinois, january, lake, landmark, landscape, metropolitan, michigan, midwest, modern, office, outdoor, panorama, real, reflection, scenery, sears, sky, skyline, skyscraper, success, tourism, tower, travel, urban, usa, water, wide, winter,