Action and Reaction

Historical marker location:

Saint Louis, Missouri

( Marker is on Gateway Arch Trail, on the right when traveling south.)

Jefferson National Expansion Memorial. National Park Service, U.S. Department of the Interior

The St. Louis World's Fair, also known as the Louisiana Purchase Exposition, was held in St. Louis in 1904 and attracted millions of visitors from around the world. It was where the ice cream cone was first introduced, and also featured the first Olympic Games held in the United States.