EYE is a three-story tall eyeball sculpture that artist Tony Tasset will install in Chicago's Pritzker Park next month. You can see it, and it can see you, until the end of October. From CNN:
Tasset chose an eye because it is a powerful symbol that has been used throughout history — by the Egyptians, for example. He designed a similar but much smaller sculpture for a park in St. Louis, Missouri.
The steel reinforced fiberglass EYE has a blue iris because that is the color of Tasset's eyes.
The installation has a psychological edge to it and some people could find it creepy, Tasset acknowledged, calling it "surrealist-noir."