Hershey park trip-tomorrow

I am heading out to Hershey Park for the weekend. I'll be traveling Rt78 west to the Harrisburg area. Any places of interest where I can jump off and railfan..say harrisburg? reading? any other ideas?
thanks

I think I-78 is the east-west hwy that passes closest to the Reading & Northern regional. You can exit at Hamburg, PA. Go north on Route 61 past Cabela's Sporting Goods & the shopping center. R&N's headquarters & engine house is in Port Clinton, no more than 5 minutes north of Hamburg. Check in at the office and ask if you can *SAFELY* look around a bit. It's worth your time.