Work took me to Chicago and I was able to do some picture taking. The sky was stark white and I was concerned about getting any good building shots.
This machine is actually a wind turbine called helix wind. This contraption was mounted on the corner of a building downtown. There were forecasted 17mph winds when I took this and only the top turbines were spinning. It would seem these are doing a better job of looking cool than actually generating a lot of energy.