Shedd Aquarium

Shedd Aquarium is an indoor public aquarium in Chicago. Opened on May 30, 1930, the 5 million US gal aquarium holds about 32,000 animals and is the third largest aquarium in the Western Hemisphere, after the Georgia Aquarium and Monterey Bay Aquarium.The Shedd Aquarium is a highly-ranked world aquarium and at one time was the largest indoor facility in the world. It is the first inland aquarium with a permanent saltwater fish collection. The aquarium is located along Lake Michigan in the city's Museum Campus, which also includes other highly-ranked institutions such as Adler Planetarium and the Field Museum of Natural History.

In 2015, the Shedd Aquarium had 2.02 million visitors. It was the most visited aquarium in the Western Hemisphere in 2005, and in 2007, became the most visited cultural institution in Chicago. The aquarium contains 1,500 species, including fish, marine mammals, birds, snakes, amphibians, and insects.

Source: Wikipedia