Indoor rock climbing. lol...
Here's a good place to look for stuff:
http://www.roadsideamerica.com/location/pa
Your dad and brother will scoff at this, but once guys experience this they are converts for life. And going here IS an adventure for guys. A couple of spa treatments. Like a facial and a massage. My ex fought this kicking and screaming. That is, until he went with me. Then he was asking, "when are we going back?"
There's always sports. Like a baseball game or some such thing. One of my favorites is going to a pee wee game. Watching the little tiny kids is like watching the keystone cops. Especially hockey. Oh man, is it funny!!!! Last time I cheered and laughed until my throat hurt.
When I was looking on that pennsylvania attraction site, the tour of the Eastern State Penitentiary caught my eye. Nothing like a day in a massive decomissioned maximum security state prison to bond a family. It even has Al Capone's cell.
http://www.roadsideamerica.com/story/18525 Not adventurous, but entertaining.
A favorite of mine to hang with the guys is fishing. The fish aren't the point. The point is to hang out together and drink beer (O'Douls for you). I don't eat fish and I refuse to catch one, so I don't even put a hook on the end of mine. Nobody ever notices. They just think I have lousy luck. If you don't have poles just go to Walmart. You can get pretty cheap ones there.
Oh, wait! You said exciting. Well, then. I have no idea! Try this spot:
http://www.800poconos.com/
How about bungee jumping? Or a hanglider ride (with an experienced person)? or whitewater rafting - do you have that there?
Here's a different kind of exciting. A ghost hunt with an actual paranormal investigator:
http://www.pennsylvania-mountains-of-attractions.com/ghosthunt.html
lol....