www.nps.govCheck out the National Park's website. You will find many, many opportunities to check out neat stuff- historical, geological, and cultural. Many sites have campgrounds. If you are 62 or older, you can buy a senior pass for $10 that will give you abd your son free admission to all the parks and 50% off campground fees at almost every Federal campground. If not that old, a pass for $85 (I think) will get you and your son free admission to all the National Parks. Plan your itinerary and the costs for admission to the parks; this can save a lot of money!