Wikipedia
Montségur
Montségur is a commune in the Ariège department in southwestern France.
It is famous for its fortification, the Château de Montségur, that was built on the "pog" (mountain) on the ruins of one of the last strongholds of the Cathars. The present fortress on the site, though described as one of the " Cathar castles," is actually of a later period. It has been listed as a historic site by the French Ministry of Culture since 1862.