As I planned our weekend in Dubuque, I was told to make sure we visited the National Mississippi River Museum & Aquarium. I wasn't sure what to expect and thought it would just be a fun stop. We ended up spending three and a half hours at the museum! The exhibits were all very interesting and the indoor/outdoor plan of the museum was very cool. My husband loved looking at the outdoor displays of the boat machinery and we really enjoyed walking around the grounds. Make sure to walk to the other end of the property and climb up to the top of the boat. We had a great time and plan to go back!