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:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.