The importance of Coria in Roman times is reflected in its defensive military fortification erected during the Early Roman Empire (1st century). Its layout is the shape of an irregular trapezoid featuring solid walls of granite ashlar masonry, completed with the traditional pattern of stretcher and header bond on their faces and the internal reinforcement with a 3-metres-thick layer of concrete. These walls are defended by twenty-three robust square or cube-shaped towers, each located about 20 or 30 metres apart, surrounding its total perimeter of 1,065 metres. The imposing fortification extends across six hectares of land, as the walls adapt to the uneven terrain with their width occasionally exceeding 4 metres and their height ranging between 10 and 14 metres.
These enormous defensive walls protect its boundaries and give access through four entrance gates: to the north, the Puerta de San Pedro/Puerta del Sol (1st century); to the southwest, the Puerta de la Guía/Puerta de la Ciudad (1st century); to the northwest, the Puerta de San Francisco/Puerta del Rollo (16th century); and to the east, the Puerta del Carmen/Puerta Nueva (16th century). These huge gates are reminiscent of the Roman domination and presence in the territory. Although, throughout its extensive history, this borderland has been subjected to alterations and several episodes of war, the Roman City Walls of Coria, as a whole, are arguably among Europe’s best-preserved fortifications.
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.