Atlanta offers a City Pass that provides entrance to five major city attractions at a reduced rate, and the ability to skip over long lines at ticket booths (we've taken advantage of similar offers in other cities). As part of this City Pass, we visited the Georgia Aquarium in Atlanta, the largest in the Western Hemisphere (it was the world's largest until surpassed in 2012 by the Marine Life Park in Singapore). This beautiful building is located at the north end of Centennial Olympic Park, in a complex that includes the World of Coca-Cola and the Center for Civil and Human Rights. The structure itself looks like a giant boat or ark moving through the water. One of its highlights is the collection of whale sharks (the largest fish species). The only aquarium outside of Asia that has such an exhibit. These sharks are huge, but graceful and elegant. We spent hours exploring the five different galleries of the aquarium that correspond to specific environments. Perhaps the most interesting part was being able to walk through a glass tunnel with the fish swimming all around us, as if we were in the water with them. Even though we've been to other such venues in other parts of the world, this was still a delightful experience.