Occupying two side-by-side but separate buildings, this well-done aquarium is a fun and educational rainy-day destination. The River Journey building spotlights the inhabitants and ecology of the Tennessee River as it flows from the Appalachian Mountains to the Mississippi Delta. Exhibits in the Ocean Journey building showcase saltwater marine life – including piranhas! Crowd-pleasers include river otters, penguins, and leaping lemurs, which swung their way into the aquarium from Madagascar in 2017.
There's also an IMAX 3D theater on the grounds.