Rumor has it your car will roll uphill in neutral here - we tested it out and found it to be.... Gravity Hill is in Lewisberry, PA at the intersection of Rt 177 and Pleasant View Rd. The hill is on Pleasant View - watch for cars behind you if you do this, and be careful of cars whizzing off of 177 onto Pleasant. This is near both Harrisburg and Hershey, so if you're in those areas, this is a fun side-trip!