The Château Vicomtal Saint-Pierre de Fenouillet is a ruined 11th century castle in the commune of Fenouillet.
In the 12th century, Bertrand de Saissac, Viscount de Fenouillet, was one of the major vassals of the Viscount of Carcassonne. Bernard is known for his Cathar beliefs, and his dislike of the Catholic Church. It is likely that the first Cathar preachers came to Fenouillet around this time.
At the beginning of the 13th century Toulouse, Foix and Carcassonne, became targets of the crusade against the Cathars. Fenouillet was not the theatre of military operations, but it was enmeshed in irreversible political and territorial changes. Bertrand de Saissac, Viscount de Fenouillet, as a senior vassal of the Trencavels, Viscounts of Carcassonne, was directly involved in the fight against the Albigensian Crusaders.
With the treaty of Corbeil, Fenouillet becomes a border area under the authority of the Viguiers of the Kings of France. Castel Fizel was mentioned in 1260, and it seems that the castle there was enfiefed by the King of France to vassals in 1262. Fenouillet is mentioned as a royal fortress in 1272, but it was not until 1290 that we find Sabarda as a royal fortress.
During the XIII and XIV centuries the castle was completely dismantled. A ramp, probably intended to facilitate the work of demolition, was built against the door of the keep. This abandonment of the main site and the transfer of military defence to the small nearby castle of Sabarda can be explained by the fact that the broad promontory on which the castle of Fenouillet is built, could only be defended with the assistance of the people of Castrum. Given the small size of the royal garrisons assigned to monitor the border, it was more reasonable to modernised and strengthen a castle of a more manageable size.References:
The Château du Haut-Koenigsbourg is situated in a strategic area on a rocky spur overlooking the Upper Rhine Plain, it was used by successive powers from the Middle Ages until the Thirty Years' War when it was abandoned. From 1900 to 1908 it was rebuilt at the behest of the German kaiser Wilhelm II. Today it is a major tourist site, attracting more than 500,000 visitors a year.
The first records of a castle built by the Hohenstaufens date back to 1147. The fortress changed its name to Koenigsburg (royal castle) around 1157. The castle was handed over to the Tiersteins by the Habsburgs following its destruction in 1462. They rebuilt and enlarged it, installing a defensive system designed to withstand artillery fire.
The fortification work accomplished over the 15th century did not suffice to keep the Swedish artillery at bay during the Thirty Years War, and the defences were overrun.