""The official title of the 1933 World's Fair in Chicago was A Century of Progress International Exposition. The Fair was organized to mark Chicago's one hundred year anniversary. The mission of the Fair was to demonstrate the significance of scientific and technological discoveries to industry and modern society and how those discoveries were being made. The Fair also showcased modern advancements in art, literature, and architecture from across the globe. Exhibits from all over the world included new automobile designs, houses of the future, and babies living in incubators. There was also an abundance of international carnival entertainment at the Fair, including the Skyride, a cable-suspended people mover higher than any building in Chicago. The midway provided games, a roller coaster, shows, and food. "" (encyclopedia.com) This is the Ford Building. ""Henry Ford, who had insisted that his company not participate in the 1933 fair, switched gears after seeing the publicity that rival General Motors had generated for its products through its working model of a G.M. assembly line. The dome, 200 feet in diameter, represents the giant cogs of a set of gear wheels. The building embodies new principles of electric illumination, both for lighting and for spectacular effects. Nearly four acres of floor space are devoted to educational and industrial exhibits. Albert Kahn of Detroit is the architect. Main entrance is through the rotunda. Here 67 vehicles of different eras show the development of wheeled vehicles from the Egyptian chariot to the motor car of today. Around the rotunda concourse is a series of photo murals 20 feet high and 600 feet long. Middle of the rotunda is the Court of the World, open to the sky. An electrically revolved globe 20 feet in diameter is in the center. Looking upward at night, the visitor gazes into a weaving mass of colored clouds of ceaselessly changing patterns, from which rises an enormous pillar of clear, white light that under proper atmospheric conditions attains the height of one mile. Twenty-four 38-inch projectors of 5000 watts are used to create the pillar of light. By all accounts, the Ford Building, with its gigantic globe highlighting Ford�s operations around the world, was the most popular corporate attraction at the 1934 fair."" (https://chicagology.com/centuryprogress/1933fair04/)