The 1904 World’s Fair in Saint Louis

World’s Fair Side Stories Blog - Fun Fact About the 1904 World’s Fair - This is a short documentary of 1904 World’s Fair that was held in St. Louis, also known as the Louisiana Purchase Exposition. This was one of many world expositions that have been held since 1856, but some consider this one to be one of the most significant for a variety of reasons. When the Fair was held, St. Louis was the 4th largest city in the United States.