Gettysburg. One of the largest civil war battle fields. Return to I76, PA pike, west, from York can be done via RT30 to Gettysburg, then over Tuscarora mountain, a scenic view. Those traveling south another civil war battlefield, Antietam, Sharpsburg, MD. Near the Potomac River there are several accesses to the C&O Canal Path(trail). Great Falls, MD. one of the better parks. Enjoy your visit to eastern Pa.
Traveling the PA turnpike you may want to consider EZ pass. Pike is an expensive toll ride.
Edit/Add: So expensive, recently the turnpike commission has defaulted on some very heavy loans that funded the most recent renovations. Apparently with parallel routes I80, and I70, those who would use I76$$$ have found other roads. Hmmm??
