Burnham and Root, 1885; lobby re-worked by Frank Lloyd Wright in 1905; extensive restoration in 1988 going back to the original Wright and Burnham and Root designs. The lobby is open to the public and is a stop on architectural walking tours. It's right around the corner from where I work.
September 2015 - I dropped my Nikon L22 at the arboretum (on asphalt!) and it's definitely broken. :(
October 2014- finally reached 365 photographs and it...