A Century of Progress International Exposition, also known as the Chicago World's Fair, was a world's fair held in the city of Chicago, Illinois, United States, from 1933 to 1934. The fair, registered under the Bureau International des Expositions (BIE), celebrated the city's centennial. Designed largely in Art Deco style, the theme of the fair was technological innovation, and its motto was "Science Finds, Industry Applies, Man Conforms", trumpeting the message that science and American life were wedded.