Persian windcatchers. See http://en.wikipedia.org/wiki/Windcatcher http://en.wikipedia.org/wiki/Windcatcher And they are huge, try to find pictures with human

Persian windcatchers. See http://en.wikipedia.org/wiki/Windcatcher http://en.wikipedia.org/wiki/Windcatcher And they are huge, try to find pictures with humans to get an idea of the scale. One day I hope to make it to Yazd to see the real thing.