The Palace of Electricity and the adjoining Water Castle (Chateau d'Eau) designed by architects Eugène Hénard and Edmond Paulin,[1] were among the most popular sights. The Palace of Electricity was built partly incorporating architectural elements of the old Palace of the Champ de Mars from the 1889 Exposition.The Palace was enormous, 420 meters long and 60 meters wide, and its form suggested a giant peacock spreading its tail. The central tower was crowned by an enormous illuminated star and a chariot carrying a statue of the Spirit of Electricity 6.5 meters high, holding aloft a torch powered by 50,000 volts of electricity, provided by the steam engines and generators inside the Palace.