My favorite white-knuckle drive (East Coast) is Sharon Springs Road coming down out of Burke’s Garden from the south; which is just a bit to the southwest of Big Walker Tunnel. A narrow, unpaved nightmare of switchbacks and drop-offs that will have the most seasoned driver sweating. Man...my wife and I prayed all the way down. :-)
We have a highway in Anderson County called The Devils Triangle. It’s considerably worse then The Dragon in curves but not as popular.. TN 116 out of Lake City TN.