Louis Le Vau was a French Baroque architect, who worked for Louis XIV of France. He was an architect that helped develop the French Classical style in the 17th century.

French Baroque architecture, usually called French classicism, was a style of architecture during the reigns of Louis XIII (1610–1643), Louis XIV (1643–1715) and Louis XV (1715–1774). It was preceded by French Renaissance architecture and Mannerism and was followed in the second half of the 18th century by French Neoclassical architecture. The style was originally inspired by the Italian Baroque architecture style, but, particularly under Louis XIV, it gave greater emphasis to regularity, the colossal order of façades, and the use of colonnades and cupolas, to symbolize the power and grandeur of the King. Notable examples of the style include the Grand Trianon of the Palace of Versailles, and the dome of Les Invalides in Paris. In the final years of Louis XIV and the reign of Louis XV, the colossal orders gradually disappeared, the style became lighter and saw the introduction of wrought iron decoration in rocaille designs. The period also saw the introduction of monumental urban squares in Paris and other cities, notably Place Vendôme and the Place de la Concorde. The style profoundly influenced 18th-century secular architecture throughout Europe; the Palace of Versailles and the French formal garden were copied by other courts all over Europe.