Begun in the 16th century by Hernando de Vega over remains of a 10th century castle, the Grajal de Campos Castle was finished by his son Juan de Vega y Acuna, count of Grajal. Designed to withstand the use of artillery the castle has sloped walls and its overall height is lower than those of earlier castles, making it difficult and hard to target by cannon fire.
The Grajal de Campos Castle has a square plan with four corner towers covering all blind spots and it is located on the western edge of the village over a small hill. In this same village there is a renaissance palace owned by the same counts which is said to be linked by an underground tunnel with the castle.
To this day, the castle belongs to the actual Duke of Alburquerque, its interior is dismantled and can be visited.
References: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.