Saint Eilian's Church is Grade I listed Celtic church, with a 12th-century tower, 14th-century chapel and a nave and chancel dating from the 15th century. In the chancel is a 15th-century rood screen, and there are traces of post-medieval wall paintings. A painting of a skeleton bears the inscription Colyn angau yw pechod ('The sting of death is sin'). The Church is named after Saint Eilian (Eilianus). Eilian of Rome also known as Eilian of Anglesey was a 6th-century saint who came from Rome to Britain where he lived as a hermit in the area north of Anglesey. His feast day is 13 January. The churchyard contains the war grave of a Royal Navy sailor of World War I.
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.