The École spéciale d'architecture (ÉSA; formerly École centrale d'architecture) is a private school for architecture at 254, boulevard Raspail in Paris, France. The school was founded in 1865 by engineer Emile Trélat as reaction against the educational monopoly of Beaux-Arts architecture. It was endorsed by Eugène Viollet-le-Duc, who had abandoned his attempts to reform the École des Beaux-Arts, and who became one of its original stockholders, along with other notables including Ferdinand de Lesseps, Anatole de Baudot, Eugène Flachat, Dupont de l'Eure, Jean-Baptiste André Godin, and Émile Muller.