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Flock in front of city hall
Michael Christian's "Flock," one of the best-known Burning Man art pieces of all time, was installed in front of San Francisco's City Hall on Nov. 17, 2005. It's the latest in a series of temporary art projects around the city.
"Flock," by Michael Christian, is a 30-foot-tall metalwork sculpture that looks like an animal whose legs morph into the roots of a plant.