Night scene with white puffy clouds passing over a snow covered Chicago skyline with trains rolling by on the tracks time lapse

chicago chicago skyline skyline building buildings timelapse time lapse flowing clouds cloud cloudy blue architecture partly cloudy willis tower city lights night movement moton city life downtown flowing clouds moving clouds location establishing city second city tourism lights big city architeture illinois hancock train tracks train trains slow shutter train lights commuter train purple sky snow winter transportation weather cloud flow