1658, Hervart organised a sumptuous feast at Saint-Cloud in honour of the young Louis XIV, his brother, "Monsieur", Philippe of France, Duke of Orléans, their mother Anne of Austria and Cardinal Mazarin. On 25 October, Monsieur bought the château and its grounds for 240,000 livres. It appears that Mazarin pressed the sale, contributing to a policy of building a network of royal châteaux to the west of Paris and relieving the excessively enriched Hervart from the fate of Nicolas Fouquet, whose fête at Vaux-le-Vicomte precipitated his fall and imprisonment. Monsieur was engaged in building operations at Saint-Cloud until his death in 1701. The works were designed and constructed by his architect Antoine Le Pautre, who built the wings in 1677. The château as it was reconstructed for Monsieur took the form of a "U" open to the east, towards the Seine, with the Gondi château, which had faced south, integrated into its left wing. To the rear, a long orangery formed a wing that prolonged the right wing of the court. The entrance avenue, bordered by dependencies, some of which survive, arrived on an angle from the bridge. Inside, the apartment of "Madame", Princess Henrietta of England, in the left wing was decorated by Jean Nocret in 1660, and the 45-metre Galerie d'Apollon, which occupied the whole of the right wing, was decorated with myths of Apollo by Pierre Mignard (finished in 1680). The last child of Philippe and Henrietta was born here in 1669 and named Anne Marie d'Orléans. She was the maternal grandmother of Louis XV of France. The château was the site of the 1670 death of Princess Henrietta, for whose funeral Jacques-Bénigne Bossuet composed the oration. In October 1677, five days of magnificent feasts in Louis XIV's honour inaugurated the new decorations and demonstrated the splendour of Monsieur's ménage. The Galerie was preceded and followed by a salon at either end, a measure to be taken up at Versailles, where Louis found himself outdone in the matter of magnificent galleries, both by his brother and by his mistress in the Château de Clagny, and set out in 1678 to build the Galerie at Versailles. Following Le Pautre's death in 1679, the work was continued by his executive assistant Jean Girard, a master mason rather than a full-fledged architect, and perhaps by Thomas Gobert. Jules Hardouin Mansart intervened towards the end of the century, designing a grand