Been there several times. The flood wall is a MUST!!! If you're looking for really good food there's a seafood restaurant at the North end of the wall that's superb and they have things other than just seafood. At the South end of the wall is a Mariner's Museum that is free will donation to tour. On the Trace (the road Between the Lakes) there's a 1880's working farm, a planatarium, and beautiful scenery. On the North or Northwest is the Welcome Center that's an old mansion. It's also a museum but I think the museum part is only open for a few hours a day. Anyway walking around the grounds is beautiful and very relaxing. And the quilt shops---Oh, the quilt shops! There are also many antique shops there too. At one time you could tour inside the dam. I don't know if it's ever been reopened after 9/11 but there is still interesting reading and sights from going in the reception bldg.