We will be visiting for about two weeks.
I suggest researching Chattanooga and east Tenn. it is very scenic and there is a lot to do in this area.
Where are you starting from and leaving from?
Take a look at where you are already to planning to go on a map. You'll see that Dollywood (Pigeon Forge) and Graceland (Memphis) are on opposite ends of a very wide state. As has already been mentioned, Chattanooga is a nice small city / big town, and east TN in general is very scenic. Of course the obvious omission in your itinerary is Nashville, which is in between. I'd plan a significant chunk of time in Middle Tennessee -- not only for Nashville and the surrounding metro area (including Franklin) but other sites like the Jack Daniels Distillery in Lynchburg. You could also take side day or 1-night trips into Alabama (i.e., Huntsville / Space & Rocket Center or Birmingham) or Kentucky.
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