Palais Brion
The House of Orléans did not occupy the northeast wing, where Anne of Austria had originally lived, but instead chose to reside in the palais Brion to the west of the main block, where the future regent, before his father died, commissioned Gilles-Marie Oppenord to decorate the grand appartement in the light and lively style Régence that foreshadowed the Rococo. These, and the Regent's more intimate petits appartements, as well as a gallery painted with Virgilian subjects by Coypel, were all demolished in 1784, for the installation of the Théâtre-Français, now the Comédie-Française.
The palais Brion, a separate pavilion standing along rue Richelieu, to the west of the Palais-Royal, had been purchased by Louis XIV from the heirs of Cardinal Richelieu. Louis had it connected to the Palais-Royal. It was at the palais Brion that Louis had his mistress Louise de La Vallière stay while his affair with Madame de Montespan was still an official secret.
Later on, the royal collection of antiquities was installed at the palais Brion, under the care of the art critic and official court historian André Félibien, who had been appointed in 1673.
Read more about this topic: Palais-Royal