A rare sight

This was a quick shot just before the lights turned green. This is Bahrain's World Trade Centre. It has won awards for its energy efficiency. I think it's a beautiful building but sadly the "propellers" are hardly ever used. I have only seen them going round three or so times since it's been built and two of those were on "Grand Prix F1" days. So it was a rare and pleasant sight to see the paddles turning today even though it was a bit windy.

On looking at the photo again you might have trouble seeing the propellers but there are three sets between the two towers!