Rooftop Garden Picture -- Chicago Photo -- National Geographic Photo of the Day — photography.nationalgeographic.com

Photograph by Diane Cook and Len Jenshel This Month in Photo of the Day: The Power of Photography A garland of nature crowns Chicago's City Hall, softening the hard edges of a town famous for steel and stone—and lowering summer temperatures on the roof. See more pictures from the May 2009 feature story “Up on the Roof.” Cook is one of 11 photographers featured in our "Women of Vision" exhibit. See more pictures from the exhibit and hear from the curators on Proof.

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