Don't forget to pack a swimsuit for your trip down the Blue Ridge Parkway, because there's an awesome natural slip 'n slide along the route. The waterfall, known as Sliding Rock, is on Looking Glass Creek in Pisgah National Forest, just outside Asheville. Slide down a 60-foot slope which ends with a plunge into a big pool of icy cold water. Eleven thousand gallons of water pour over the smooth slab of granite every minute, so expect a swift ride down the rock and into the splash pool.