I have pretty much finalized a great trip to The Grand CIrcle camping with my wife and eight year old grandson. We are ending up in Mesa Verde. Faced with the prospect of high tailing it back to Langhorne (just north of Philadelphia) I wonder what really cool things might be just outside our route that our grandson might enjoy. The world is full of fun stuff and I'm sure there are many I would be missing by sticking to the interstate. Time is pretty flexible and although we are headed pretty much straght home, we don't mind a detour. Does anyone have favourite places to recommend?