Your transit through Pennsylvania may be more entertaining along US Rte. 15. It's a surprisingly pleasant drive in many parts. Gettysburg battleground is along there for example, Hershey PA is not far off as well.
Also another good tool for finding fun roads is twistyroadfinder.com. I frequently use it for vigorous weekend day drives; find a road, let google maps get me there, do the road, then let google maps get me home. Be sure to flip the 'avoid highways' switch!
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