If you're in Knoxville & have your mc, you might as well hit the devil's triangle. Its just N of Oliver Springs TN. Here is a link to a website with the maps. The link is kinda corny...
http://www.devilstriangletn.com/There's a prison there called the Brushy Mountain State Penitentiary. It was the longest active prison in the US when they closed it a few years ago. Its right on the Triangle route & I think its pointed out on the map.