The city purchased its first exhibit, the Flight Cage, from the Smithsonian Institution following the 1904 St. Louis World's Fair. After the zoo was established in 1910, new exhibits, areas, and buildings were added through the decades to improve care of the animals, the range of animals and habitats shown, ands education and interpretation. The head of the male lesser kudu, with his elegant spiraled horns, is the symbol of the Saint Louis Zoo.