The most visited aquarium in the United States and, by most accounts, genuinely impressive. The highlight is a 340-foot underwater tunnel where sharks and rays glide overhead. It's a serious aquarium, not just a tourist trap, and kids and adults both tend to come out impressed. Book ahead — it fills up fast in peak season.
Ripley's Aquarium of the Smokies
Hugely popular aquarium with a shark-filled underwater tunnel