Chicago at Night

An image of downtown Chicago at night, taken from the observatory deck of the John Hancock Center. The observatory deck was enclosed by glass, so I had to press the lens up to the glass to prevent any glare. It was taken with my Nikon D90/18-200mm lens (18mm focal length, f/3.5, 1.6 seconds, ISO 800), and post processed using Photoshop CS6.