I started around Wellsboro and went to Erie, PA, which you have to get off 6 a little before getting there.
Pennsylvania Grand Canyon, Wellsboro

Wellsboro Diner, if you get hungry in that area.

Kinzua Bridge, Mt. Jewett

Drake Well, Titusville, a little ways off 6, but if you like the history of oil in this country it is worth a visit.

PennDot Road Sign art in Meadville. I have not gotten those pictures done yet !
Very nice road.
Should be pretty with the leaves changing soon too.
Have a great trip.