This is Wigwam by Chris Lemay in the Mueller Park.

I’m not sure what the proper name for this is. It moves in the wind, so I’m calling it a windmill.  It’s near the Thinkery in the Mueller Complex (Austin, Texas). The Thinkery is a children’s museum. My inner child sure wants to go inside and check it out.

Update: It’s a kinetic sculpture by Jim LaPaso.