When in St Louis, you really should visit the zoo! It has tons of animals and a great little train ride as shown in this video clip:
The St Louis Zoological Park, typically known as the St. Louis Zoo, is a zoo in Forest Park in St. Louis, Missouri, USA. It is acknowledged as a leading zoo in pet management, research, conservation, and education and learning. The zoo is approved by the Organization of Zoos and Aquariums (AZA). Admission is free based on a public subsidy from a cultural tax district, the Metropolitan Zoological Park as well as Museum District (ZMD); fees are billed for some unique tourist attractions. An unique function is the 2 ft (610 mm) slim gauge Emerson Zooline Railroad with passenger trains pulled by coincidence Uses C.P. Huntington engines that encircle the zoo, stopping at the a lot more popular tourist attractions. 
The city bought its first exhibit, the Trip Cage, from the Smithsonian Institution complying with the 1904 St. Louis World's Fair. After the zoo was set up, brand-new displays, areas and structures were included through the decades to boost treatment of the animals, the range of pets as well as environments revealed, in addition to education and learning and also interpretation.