Well, I also wanted to take a look at the Bridgehouse and Chicago River Museum. Good thing I did. There was a pic of a porthole you could look through and I saw the part under the bridge that you can walk through and it is very dark in there. Even darker at night. Small little people might not bee seen when taken through there. Just a thought. Also, there was a plaque dedicated to Irv Kupcinet. Now the only way I remembered him was a horrible thing that was in the papers years ago. 1963 was the year that his daughter was murdered in LA. She was Karyn Kupcinet and she was out there trying to make her way to the top in Hollywood. It was in the papers for quite some time. The murder was never solved. It was rumored to be connected to JFK assassination at one time. You can find info here, I looked it up: https://en.wikipedia.org/wiki/Karyn_Kupcinet