I visited the Money Museum as well on my trip to Chicago. They have all these obscure forms of currency that you would never see throughout the place. They show you what one million dollars would look like in a brief case in front of you and also have a coin pit for you to estimate how much value is in there. Its a pretty quick experience doing the walk through, but very interesting to see in person. I had never seen so much money in my life! They have the museum in a bank so everything has great security. Give this place a visit though! You might learn something!
Here’s a link to the site for tour hours.
230 South LaSalle Street
Chicago, Illinois, 60604