Day three of our Great Smoky Mountains journey was to the highest mountain. Clingmans Dome, at 6643 feet is also the highest point in the state of Tennessee and according to Wikipedia the highest point of the Appalachian Trail. If going keep in mind the time of year. It is a 7 mile drive in. We went at a prime time in the fall during "leaf peeping" season and traffic was awful and parking almost impossible. But it is well worth it! Be prepared for the 1/2 mile walk up a paved but very steep road. There are places to stop and rest and unless you are in top shape.... trust me you will need them.