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Milwaukee Art Museum by architect Santiago Calatrava of Velencia Spain. Perched on the shore of Lake Michigan,it resembles a large sailing vessel. A unique feature is it's moveing wings or sails. They open in the morning and close at night. They flap at noon to the delight of visitors. His first project in the United States,completed in 2001. The sails are shown 25 per cent open in this wallpaper.