I'm in Chicago for the week for business, and I decided to drag my family along with me. We are staying at the Club Quarters Central Loop, which is not modern at all, but relatively affordable. While most of my days will be taken up, I have nights to explore, and my wife and kid have a wide open schedule. So what are some must do's and must see's in Chicago? We are about four blocks from the Sears Tower and prefer to roll on foot. We also plan on hitting H & M for sure to get some clothes for Arrington. Any other recommendations?