Proposals to rebuild Gabriel Davioud's Palais du Trocadero 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 Azema (1888-1978)), enclosing within its two curved wings parts of the original structure. In front of this, created for the fair, are gardens and fountains designed by Roger-Henri Expert, complemented with sculpture. The lower part of the long basin known as the Warsaw Fountain is framed by two sculpted blocks; 'Jeunesse' (Youth), by Pierre Poisson and 'Joie de Vivre' (Joy of Life), by Leon Drivier.