The largest freshwater aquarium in the world when it opened in 1992, and still one of the best. Two buildings -- River Journey and Ocean Journey -- trace water from Appalachian mountain streams to the open ocean. The river building is the standout, with otters, sturgeon, and a walk-through forest canopy. Allow two to three hours for both buildings.
Tennessee Aquarium
World-class freshwater aquarium tracing water from mountain streams to the ocean