We took the Hop-on Hop-Off Tour our last day in Chicago as filler, before our flight out. The ticket seller was great, very friendly and helpful, the first tour guide was friendly, but only seemed intent on pointing out restaurants and very few points of interest, so all I thought was how much do the restaurants pay to get these plugs? Our second guide on the other hand, name of Austin, was great! He was very informative and entertaining, pointed out the sites and had interesting anecdotes. He answered questions and if he didn’t know the answer, he didn’t try to fake it. We had walked miles the previous two days, so this was just a nice easy way to review the sites and kill a little time. It would make sense to do this first instead of last as it does give you a nice overview of the loop, the museum district, Millennium Park and Navy Pier.