Willis Tower at night, USA, Illinois, Chicago, Chicago River

no people vertical outdoors night illuminated building exterior architecture skyscraper city downtown district river usa chicago river willis tower travel destinations local landmark famous place office building illinois chicago street long exposure modern office building cityscape downtown skyline windy sunrise travel sears tower nobody open air outside exterior exteriors night time nighttime illumination lighting lit up facade architectural urban scene skyscrapers waterway united states north america north & central america america american office buildings business built structure il road buildings morning rise of sun dawn early bright daybreak mornings dawns time nights illuminating lit illuminations buildings exteriors construction planning man made structure metropolis cities downtown districts