The remains of the Castle can be visited
Château de Durfort

The Château de Durfort, a ruined castle, is situated in the commune of Vignevieille in the Aude department of the Occitanie region in France. On a rocky spur, it overlooks the Orbieu valley. Its history dates back to the 11th century.
History+
The earliest written references to Durfort Castle date from the 11th century. In 1093, it is mentioned in a document between Bertrand, son of the Lord of Durfort, and Lagrasse Abbey. Later, in 1124, Guillaume and Raymond, Lords of Durfort, paid homage to Viscount Bernard Aton of Carcassonne, and in 1163, the Lord of Terme paid homage to Viscount Raymond de Trencavel for Durfort Castle. During the Albigensian Crusade in 1209, the Lord of Durfort sided with the Cathars. After its capture, the castle fell to Alain de Roucy, a lieutenant of Simon de Montfort, in 1215. Despite the royal conquest, the region remained Cathar in spirit.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Hervé Rebours
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 43.0175, 2.5486