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Part of Chicago's Museum Campus, the Shedd Aquarium holds more than 5 million gallons of water. Of the 25,000 fish that the aquarium hosts, the most famous is an Australian lungfish nicknamed "Granddad." The aquarium estimates that Granddad is over 80 years old and says he is the oldest fish alive in an aquarium.
Fun Fact: The Shedd Aquarium has developed the Right Bite program to teach local businesses and aquarium visitors the best meal options for increased seafood sustainability.
Photo source: Carol M. Highsmith
NexT: Buckingham Fountain