Wind powered sculptures

Those are absolutely fascinating! I always consider the creativity involved in conceiving such a construction!
I saw these many years ago, Katie. Aren't they wonderful.

I posted these some time ago over on WC and on my Tumblr blog. They are certainly worth another look.:)
When I first saw videos of those things years ago, I kept looking for their power source, not yet realizing that it was the WIND that was the source of power.