High above Michigan Avenue, artist Katie Chung pays tribute to the neighborhoods below. She uses many colors while keeping in mind Obangsaek, a color scheme known as the five cardinal colors of Korean culture.

What is the landmark status of Marina City and other Chicago buildings? And is the Trump sign "classy" or in the words of Chicago Tribune critic Blair Kamin, is it "urban acne"? Kamin joins us on Chicago Tonight for the latest on Chicago architecture.

Geoffrey Baer visits the John Hancock’s Crown of Lights to find out how the center makes its seasonal wardrobe changes in this week’s edition of Ask Geoffrey. He also sheds light on a shadow casting sculpture and why some city roads have both a street and a place.