One of the must stop places in Chicago is Giordano's for Chicago style deep dish pizza. This is the best pizza. If you are ever in Chicago, look them up. You will not be disappointed!
Be prepared for a wait, though. We went for lunch and had a 45 minute wait for a table. It all works out, though, since it takes about an hour for the pizza to cook. They have you order you pizza after you put your name in. By the time your table is ready you only have about 15 minutes to wait for the cheesy deliciousness!
We did also hit up The Cheesecake Factory before we left the city. It was super busy and we were still full from the pizza, so we took it to go and ate it when we got back to our room. Unfortunately there is no picture to show. I was so happy to have cheesecake that I forgot to take one! It was a beautiful lemon raspberry cheesecake. A little slice of heaven!