As I have discussed in previous posts, the neoclassical Château Bagatelle was built in about two months in 1777 as a wager between Marie Antoinette and the Count d'Artois, Louis XVI's younger brother. The central building above is the Château, modified in 1835 by Lord Seymour, marchion of Hertford. Wanting a house wider than the existing building, he removed one floor, which transformed its proportions. It contained the largest part of his extensive collection of French paintings, sculptures, furniture and works of decorative art, most of which went to form the Wallace Collection in London. Bagatelle underwent five years of redecorating and extensions, and then Lord Hertford did not reside in it until 1848. He also built the “Trianon”, seen in the above picture to the left of the château, for his son Richard Wallace.