The St. Louis Zoo's 228-foot-long free-flight one has been there since the 1904 World's Fair
There is also the Discovery Corner exhibits that include the 
children's zoo ... been the biggest in the world, and still is quite impressive at 228 
feet long... [DOC] [TLE] 1000+ images about Missouri Area Parks and Waterways on ... [PAR] See more about Missouri, World's Fair and Missouri River.