A Century of Progress International Exposition was a World's Fair held in Chicago, as The Chicago World's Fair, from 1933 to 1934 to celebrate the city's centennial. The theme of the fair was technological innovation. The fair's motto was "Science Finds, Industry Applies, Man Adapts"; its architectural symbol was the Sky Ride, a transporter bridge perpendicular to the shore on which one could ride from one side of the fair to the other.