Watch different vessels enter and exit through Hannibal Locks and Dam. Observe the water levels go up and down and exactly how this lock system works.
You'll soon learn why this Hannibal waterway structure is a hit with travelers. If you're looking for more to explore, Bruce Park, Lewis Wetzel Park, and Greenlawn Memorial Park are in this area as well. They won't take you very long to get to from Hannibal Locks and Dam.