The present Château de La Roche-Guyon was built in the 12th century, controlling a river crossing of the Seine. In the mid-13th century, a fortified manor house was added below. Guy de La Roche fell at the Battle of Agincourt, and his widow was ousted from the Roche, after six months of siege, in 1419; she preferred to depart rather than accept Henry Plantagenet as her overlord. It came to the Liancourt family with the marriage of Roger de Plessis-Liancourt to the heiress Marie de La Roche; he was a childhood companion of Louis XIII, first gentleman of the Chambre du Roi, and was made a duke in 1643. He and his wife made great changes to the château-bas, opening windows in its structure and laying out the terrace to the east, partly cut into the mountain's steep slope.
The domain of La Roche-Guyon came to the La Rochefoucauld family in 1669, with the marriage of Jeanne-Charlotte de Plessis-Liancourt with François VII de La Rochefoucauld. The Château retained its medieval aspect of a fortress, with its moat and towers and cramped, dark living apartments. The Château was largely extended in the 18th century.
After D-Day in World War II, German Field Marshal Erwin Rommel defended Normandy against the Allies in World War II from a bunker located here. The castle also was Rommel's headquarters.
Restorations and archaeological surveys undertaken after 1990 by the Conservatoire régional des Monuments historiques revealed new additions to the documentary history of La Roche-Guyon, undertaken in the 19th century by Hippolyte Alexandre and Emile Rousse.
References:The Château de Foix dominates the town of Foix. An important tourist site, it is known as a centre of the Cathars. Built on an older 7th-century fortification, the castle is known from 987. In 1002, it was mentioned in the will of Roger I, Count of Carcassonne, who bequeathed the fortress to his youngest child, Bernard. In effect, the family ruling over the region were installed here which allowed them to control access to the upper Ariège valley and to keep surveillance from this strategic point over the lower land, protected behind impregnable walls.
In 1034, the castle became capital of the County of Foix and played a decisive role in medieval military history. During the two following centuries, the castle was home to Counts with shining personalities who became the soul of the Occitan resistance during the crusade against the Albigensians.