Windmills: Designs you've never seen

So in my world, there are 2 designs for windmills: the old fashioned Dutch ones and the newfangled sleek ones used in wind farms. Which makes me pretty naive. Everything has to undergo some design before it gets implemented, right?

Check out a great post on My Wind Power System which shows the evolution of the windmill, and showcases some pretty radical designs.

The one pictured below completely scares me since it is so high and I can't help but picture a plane or flock of birds hitting it but it is kewl in a disturbing way...

Anara Tower Wind Turbine