The Arch Bridge....

....located in Lake Park, which is right across from the shores of Lake Michigan. It was  designed in the late 19th century by Frederick Law Olmsted, who also designed Central Park in New York City. "Believing that access to nature had a civilizing and restorative effect on the urban public, Olmsted designed Lake Park in the Romantic tradition, with a preference for natural (over formal) landscaping, winding paths, a variety of vistas, incorporation of wildlife, and a balance between active recreation and more passive enjoyment", according to the ever helpful wikipedia. 
I passed the bridge on my way to meet my friend for lunch--the sun was shining & the leaves looked so splendid in the light--I was going to stop for a picture but didn't want to be late, so decided I'd get it on the way back. By the time we ate & talked it was 3 1/2 hours later, the sun had long gone & there was a slight drizzle of rain, so while it's not as bright and dazzling as it had been earlier, it's still pretty! :))