This past week my husband and I have both heard a lot about Roundtop Mountain Adventures, which sounds like a lot of fun, at Ski Roundtop. There are a host of activities, from climbing walls, zip lining, tubing down the hills and bouncing around in OGO balls (I didn't know what they were until I checked out their website)!
This is a great "adventure" for your older kids, most activities are 8 and up. The prices are a little steep, but if you can get a full day out of it than it's comparable to spending the money on Hersheypark. Make sure you watch the little video on their website, it explains what you get for your money, and check out the package deals when they are offered. If you have kids that like adventure and being outdoors this place looks like a BIG winner, check it out!