You also have the Field Museum of Natural History, Adler Planetarium, and the Museum of Science and Industry. Comiskey Park is now called Guaranteed Rate Field. For (casual) food, look at the Billy Goat Tavern, Pizzeria Uno, Lou Malnati's, and Portillo's. For more upscale dining, there's The Berghoff, which is a historic German restaurant.

You can go up to the top of the Willis (Sears) Tower to the Skydeck and stand on the Ledge, which sticks out from the building and has a glass floor. Lines are usually pretty long, but you could go to the Hancock Tower. Not only does it have an observatory, there is a bar at the top that also has viewing windows on all 4 sides. There are separate elevators for the bar, no charge (except you are expected to buy drinks), but there's a charge to go to the observatory.