Brion. For the convenience of the bride, new apartments were built and furnished in the wing facing east on the rue de Richelieu. It was at this time that Philippe commissioned a Grande Galerie along the rue de Richelieu for his famous Orleans Collection of paintings, which was easily accessible to the public. Designed by the architect Jules Hardouin-Mansart, it was constructed around 1698–1700 and painted with Virgilian subjects by Coypel. The cost of this reconstruction totaled about 400,000 livres. Hardouin-Mansart's assistant, François d'Orbay, prepared a general site plan, showing the Palais-Royal before these alterations were made. Philippe II, Duke of Orléans When the Duke of Orléans died in 1701, his son became the head of the House of Orléans. The new Duke and Duchess of Orléans took up residence at the Palais-Royal. Two of their daughters, Charlotte Aglaé d'Orléans, later the Duchess of Modena, and Louise Diane d'Orléans, later the Princess of Conti, were born there. At the death of Louis XIV in 1715, his five-year-old great-grandson succeeded him. The Duke of Orléans became Regent for the young Louis XV, setting up the country's government at the Palais-Royal, while the young king lived at the nearby Tuileries Palace. The Palais-Royal housed the magnificent Orléans art collection of some 500 paintings, which was arranged for public viewing until it was sold abroad in 1791. He commissioned Gilles-Marie Oppenord to redesign the apartments of the Duchess on the ground floor in 1716 and to decorate the Grand Appartement of the Palais Brion in the light and lively style Régence that foreshadowed the Rococo, as well as the Regent's more intimate petits appartements. Oppenord also made changes to the Grande Galerie of the Palais Brion and created a distinctive Salon d'Angle, which connected the Grand Appartement to the Grande Galerie along the rue de Richelieu (1719–20; visible on the 1739 Turgot map of Paris). All of this work was lost, when the Palais Brion was demolished in 1784 for the installation of the Théâtre-Français, now the Comédie-Française. Louis d'Orléans After the Regency, the social life of the palace became much more subdued. Louis XV moved the court back to Versailles and Paris was again ignored. The same happened with the Palais-Royal. Louis d'Orléans succeeded his father as the new Duke of Orléans in 1723. He and his son Louis Philippe lived at the other family residence in Saint-Cloud, which had been empty