14. Massanutten Resort
Location: McGaheysville, Va.
Overall a pretty unremarkable water park, with the standard slides, giant buckets that dump water on you and yours, and pools of many sizes. There is a surfing simulator as well. What sets this park apart is a Louvre-esque glass pyramid that encloses the 42,000-square-foot playland. However, what sits under the pyramid is not priceless works of art or fruitful knowledge but fried food and actual fun. Same difference.