The Key West Aquarium is the only public aquarium in Key West, Florida, United States. Built between 1932 and 1934, the Key West Aquarium is one of Florida's oldest aquariums. During the Great Depression, Key West had turned over its charter to the federal government due to the economic disaster that had hit the island. The federal government believed Key West, with its great weather and location, would make a wonderful tourist destination. The Works Project Administration (WPA) was sent in and built the tourist attraction. The Aquarium was originally an open air aquarium, one of the first and largest at the time.