Château du Guildo dates from the 11th century, when there was a fortified manor, probably made of wood. The stone castle was built in the 13th century in three phases. It was destroyed a century later and the new castle construction began in the late 1300s. Later it was restored as a living residence, but badly damaged in the late 1400s during the French-Breton War. The castle took part also to the Wars of Religion, when it was surrounded several times by Catholic League. This caused the final destruction Château du Guildo.
The Château de Chantilly comprises two attached buildings: the Petit Château built around 1560 for Anne de Montmorency, and the Grand Château, which was destroyed during the French Revolution and rebuilt in the 1870s. Owned by the Institut de France, the château houses the Musée Condé. It is one of the finest art galleries in France and is open to the public.
The estate"s connection with the Montmorency family began in 1484. The first mansion (now replaced by the Grand Château) was built in 1528–1531 for the Constable Anne de Montmorency by Pierre Chambiges. The Petit Château was also built for him, around 1560, probably by Jean Bullant. In 1632, after the death of Henri II, it passed to the Grand Condé who inherited it through his mother, Charlotte Marguerite de Montmorency.
Several interesting pieces of history are associated with the château during the 17th century.