[8] He was commissioned by Jules Cardinal Mazarin to help rebuild part of the medieval Château de Vincennes.

This design, an example of a salon à l'italienne (vaulted, two-storied room),[11] develops the idea that a simple form governs the shape of the main section of the building.

[2] In the 1660s Le Vau helped on royal projects, such as the hospital of La Salpêtrière and the facade of the Tuileries Palace.

[2] Claude Perrault and Charles Le Brun were also involved in creating the famous façade for the east front of the Louvre from 1665 to 1674, which acted as a prelude for Classical Architecture in the 18th century.

[10] Le Vau's designs for the Collège des Quatre-Nations (now housing the Institut de France) were completed after his death by his assistant François d' Orbay and showed unlikely rapport with Italian baroque techniques.