In this Wednesday, Feb. 20, 2013,  photo, Artist Leo Villareal poses for photographs as he operates lights on the San Francisco-Oakland Bay Bridge on Pier 14 in San Francisco. The San Francisco-Oakland Bay Bridge has been turned into the latest, and by far the biggest, backdrop for New York artist Leo Villareal, who has individually programmed 25,000 white lights spaced a foot apart on 300 of the span's vertical cables to create what is being billed as the world's largest illuminated sculpture. (AP Photo/Jeff Chiu)
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