Auguste Perret was a French architect and a pioneer of the architectural use of reinforced concrete. His major works include the Théâtre des Champs-Élysées, the first Art Deco building in Paris; the Church of Notre-Dame du Raincy; the Mobilier Nationale in Paris; and the French Economic, Social and Environmental Council building in Paris. After World War II he designed a group of buildings in the centre of the port city of Le Havre, including St. Joseph's Church, Le Havre. to replace buildings destroyed by bombing during World War II. His reconstruction of the city is now a World Heritage Site.