Milwaukee Art Museum
I first saw this in a completely computerized rendering in the singular, incomparable online video called The Third & the Seventh. This is part of the Milwaukee Art Museum. Take it away, Wikipedia:
…designed by Santiago Calatrava (his first completed project in the United States), which opened on May 4, 2001. … The structure contains a movable, wing-like brise soleil which opens up for a wingspan of 217 feet during the day, folding over the tall, arched structure at night or during inclement weather. The brise soleil has since become a symbol for the city of Milwaukee.
Lens at 24mm, ISO 100, ƒ/8, 1/400s
Snapped May 26, 2012 at 11:17am