François Mansart (French pronunciation: [fʁɑ̃swa mɑ̃saʁ]; 23 January 1598 – 23 September 1666) was a French architect credited with introducing classicism into the Baroque architecture of France. The Encyclopædia Britannica identifies him as the most accomplished of 17th-century French architects whose works "are renowned for their high degree of refinement, subtlety, and elegance".
Mansart, as he is generally known, popularized the mansard roof, a four-sided, double slope gambrel roof punctuated with windows on the steeper lower slope, which created additional habitable space in the garrets.
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