Shedd Aquarium, Illinois
Chicago's famous Shedd Aquarium welcomes budding marine biologists who are eager to see beluga whales, stingrays, saltwater fish, dolphins and sea lions. The wildlife here can be of interest to anyone, as Shedd's exhibits even include crustaceans, amphibians, and reptiles. One mammal you're unlikely to see elsewhere is the white-faced dolphin - there are only 20 in North American aquariums, some born in Shedd.