The Electricity Building at The World's Fair: Columbian Exposition. This was a World's Fair held in Chicago in 1893 to celebrate the anniversary of Christopher Columbus's arrival in the New World in The Devil In the White City, by Erik Larson
The first Ferris wheel by George Ferris. Build by George Ferris and sometimes known as The Chicago Wheel, it opened to the public on June at the World's Columbian Exposition in Chicago, Illinois. I'm actually related to the inventor of the ferris wheel.