Columbus - Belmont State Park in Kentucky is a civil war site, on a high bluff overlooking the Mississippi and has a nice campground. Reelfoot Lake in NW Tennessee is also interesting. Lake was created by 1811/12 earthquakes by back flow from Mississippi. Very nice state park campground but no sewer connection at sites. Bass Pro Shop in downtown Memphis is more than just a retail store. I agree on stopping in Memphis. It is like most cities now you have to be careful where you go but worth seeing. The Peabody Hotel downtown is a fun place to watch the trained ducks enter the lobby. I just finished reading a book on revolutionary war in Kentucky and Illinois that mentioned the Chokia(sp) Native Indian settlement just east of St. Louis that is now a state park. We have not been there but research on it placed on our must see list.