One of the most popular expositions held in the United States, over 27 million people attended. It celebrated the 400th anniversary of the arrival of Christopher Columbus in North America (a year late because of delays). Chicago would later host the 1933-'34 Century of Progress Exposition.

The Administration Building and the Court of Honor

LINKS:
The World's Columbian Exposition of 1893 - a part of the Paul V. Galvin Library Digital History Collection
Scenes from the 1893 World's Fair - lithographs from the exposition
Interactive Guide to the World's Columbian Exposition - by Bruce R. Schulman
Web-book of the Fair - by Scott Hancock
World's Columbian Exposition: Idea, Experience, Aftermath - by Julie K. Rose
The World's Columbian Exposition of 1893 Collection - at the Chicago Public Library
The World's Columbian Exposition - edited by Jim Zwick on BoondocksNet.com
1893 World's Columbian Exposition: Romancing the City - by Andy Wood
The World's Columbian Exposition - from the Chicago Historial Society
1893 World's Columbian Exposition of 1893 in Chicago - from Boston College
World Columbian Exposition - from Wikipedia
World's Columbian Exposition - from MIT
World's Columbian Exposition, Chicago, 1893 - from the University of Delaware
1893 World's Columbian Exposition: Chicago's Finest Hour - from Collector's Marketing Resource Center
The World's Columbian Exposition of 1893 Collection - from the Chicago Public Library
The World's Columbian Exposition (1893) - from PBS's The American Experience
Magic of the White City - new documentary narrated by Gene Wilder