The aquarium is in downtown Atlanta on land donated by The Coca-Cola Company, just north of Centennial Olympic Park. Its blue metal-and-glass exterior is meant to evoke a giant ark breaking through a wave. The world's largest when it opened in November 2005, the aquarium encompassed 550,000 square feet (5. 1 ha; 13 acres) of covered space and its exhibits held 8,000,000 US gallons (30,000,000 l) of fresh and salt water. Subsequent additions to the collection and redesign of some habitats have increased the total water held to 10,000,000 US gallons (38,000,000 l).