The Tennessee Aquarium, Chattanooga, Tennessee

Chattanooga's wildly successful and popular Tennessee Aquarium is the world's largest freshwater aquarium. The ultra-modern facility reproduces and displays the natural habitats of the great rivers of the world.

As if that weren't enough, in April, 2005, the aquarium opened a new expansion which added 650,000 gallons of saltwater exhibits, with ten-foot sharks, fierce barracuda and graceful sting-rays, gliding through an undersea cavern. Other galleries showcase butterflies, cuttlefish, squid, crabs and jellyfish. A lush tropical beach, with 100 feet of "shoreline," gives visitors the opportunity to touch bamboo sharks and sting rays. If you only see one attraction in Chattanooga, you couldn't make a better choice than the Tennessee Aquarium.