Check out the best aquariums in the US to see what lives beneath the surfaces of the world’s lakes, streams and seas. 1. Georgia Aquarium, Atlanta, GA. The Georgia Aquarium is the largest aquarium in the world with 550,000 square feet of exhibits, including over 100,000 animals. The Georgia Aquarium is home to the only whale sharks outside of Asia. One of the newest exhibits is the $110 million dolphin exhibit that features the theatrical “Dolphin Tales” show.