311 south wacker
america
architectural
architecture
blue sky
building
buildings
chicago
cityscape
cloud
clouds
cloudy blue sky
color
colour
daytime
downtown
exterior
facade
facades
high
high rise
highrise
highrises
illinois
keith levit photography
outdoor
outdoors
outside
sky
skyscraper
skyscrapers
structure
tower
towers
united states
united states of america
urban
usa
wall
walls
window
windows