My fiance and I (both 28 years old, if it matters) are leaving chicago during the second or third week of april. Going through indiana, ohio, pennsylvania, maryland, west virginia, virginia, tennessee, kentucky, and back up through indian and illinois. we'll be driving on the following highways in this order; 90/80 east to 70/76 east to 522 south(small highway) to 81 south to 40 west to 65 north to 90/94 west, (may have some of the east or south directions wrong because Im not familiar completely with some of the highways) we plan on seeing shenandoah nat'l park, great smoky mountains nat'l park, mammoth cave nat'l park, and the nat'l corvette museum(in kentucky). My questions are if anyone can suggest on other "big name" sites that we should see or stop at, or any other roads not far off the highways that we should drive through for beautiful scenery, and any other tips. I appreciate any help guys, thanks in advance.