Detail, head of the basin with twenty powerful water cannon; Proposals to rebuild Gabriel Davioud’s Palais du Trocadéro for the Exposition Internationale des Arts et Techniques dans la Vie Moderne (1937) in Paris resulted in Carlu's design for the Palais de Chaillot (with Louis Hippolyte Boileau and Leon Azéma (1888-1978)), enclosing within its two curved wings parts of the original structure. The main feature, called the Fountain of Warsaw, is a long basin, or water mirror, with twelve fountain-creating columns of water 12 meters high; twenty four smaller fountains four meters high; and ten arches of water. At one end, facing the Seine, were twenty powerful water cannon, able to project a jet of water fifty meters. Above the long basin wer...