aerial
aerial view
america
american
architecture
building
building exterior
buildings
built structure
chicago
city
cityscape
contemporary
destination
downtown
downtown district
dusk
hancock
hancock building
high angle view
high up
hotel
illinois
landmark
michigan
midwest usa
night
noon
north america
observatory
office
sky
skyline
skyscraper
street
summer
sunset
tall
tourist
tower
traffic
urban scene
usa
view
waterfront
willis tower