The reformed church of Easterlittens was in catholic times known as St. Margaretha. The one-aisled nave was built in the 12th century, partly of tuff. The brick choir dates from the 13th century. In the 15th century the windows were enlarged and a sacristy was added to the north side. The south wall has a portal in manneristic style from 1655. The brick tower dates from 1854 and was designed by F. Stoett in a more or less neo-Romanesque style.
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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.