The Universal Exposition of 1878 took place on both sides of the Seine, in the Champ de Mars and the heights of Trocadéro, where the first Palais de Trocadéro was built. Alexander Graham Bell displayed his new telephone, Thomas Edison presented his phonograph, and the head of the newly-finished Statue of Liberty was displayed before it was sent to New York to be attached to the body. In honor of the Exposition, the Avenue de l’Opéra and Place de l’Opéra were lit with electric lights for the first time. The Exposition attracted thirteen million visitors.