Green Rooftop Graces Chicago’s City Hall

CHICAGO – AUGUST 16: The city of Chicago City Hall’s rooftop garden is seen amongst nearby buildings August 16, 2006 in Chicago, Illinois. The garden sits on the top of the 11-story city hall building and was first planted in 2000. The city says the rooftop garden/green roof consists of upwards of 100 species of growth in almost 20,000 plants. Two trees, shrubs and vines can also be found there. (Photo by Tim Boyle/Getty Images)