Totally Tubular
Looking for an offbeat way to cool off this summer? Aside from the usual pools, waterparks, and swimming holes, give river tubing a try. It's a relaxing way to enjoy some natural scenery while you float the day away. Whether you want to drift along slowly with a beer in hand or tackle some thrilling whitewater, there's a river for you somewhere in the United States. Here are 25 of our favorites.