The Columbian Exposition, officially known as the World's Columbian Exposition, was held in Chicago in 1893 to celebrate the 400th anniversary of Christopher Columbus's arrival in the Americas. The fair showcased the progress of the United States and featured impressive architecture, cultural exhibits, and technological innovations, attracting millions of visitors. The exposition included the famous Ferris Wheel, designed by George Ferris, which became a symbol of the event. It also highlighted advancements in various fields, such as electricity and transportation, and served as a platform for international cooperation and cultural exchange among participating nations.