Le Vau, Louis (lwē lə vō) [key], 1612–70, French architect, involved in most of the important building projects for Louis XIV. He settled on the Île Saint-Louis, where he built his own house and the Hôtels Lambert and Lauzun. In 1655, Le Vau succeeded Jacques Lemercier as architect for the Louvre, on which he collaborated with Claude Perrault. He designed the palace of Versailles, where he worked with Lebrun, creating a nucleus later completed by J. H. Mansart. Among his other designs are the château of Vaux-le-Vicomte; the Collège des Quatre Nations, Paris, now the Institut de France; and the Church of St. Sulpice, Paris, the facade of which was later built by Servandoni.
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