World's Fair -- 1892
May 1893: The opening of the Chicago’s World Fair. The overall purpose of the celebration was to recognize the 400th anniversary of Christopher Columbus’ journey to the New World in 1492. Designed by a group of talented architects, the fair attracted over 27 million people from 46 different countries, constructed over 200 new (but temporary) buildings featuring neoclassical architecture, along with large water pools and lagoons. The exposition became an emerging symbol of American Exceptionalism.
It also became a hunting ground for one of the first documented American serial killers, Doctor Henry Howard Holmes, better known as H.H. Holmes.