Château de Montségur

In about 1204 Raymond de Péreille, one of the two lords of Montségur, decided to rebuild a castle on the pog — the sugarloaf peak above the village — that had lain in ruins for forty years or more. Refortified, it became a centre of Cathar activity and home to the theologian and bishop Guilhabert de Castres. The Lateran council of 1215 already cited the fortress as a lair of heretics, and after the Treaty of Meaux in 1229 it sheltered the faidits, knights dispossessed of their lands — among them Pierre-Roger de Mirepoix, Raymond's cousin and son-in-law, who became the fortress's military commander. In 1233 the site was made "the seat and head" — domicilium et caput — of the Cathar church, and the fortified village is estimated to have housed about 500 people.

The crusaders had already tried the mountain: Guy de Montfort in 1212 and his brother Simon in 1213 both came away with nothing, and in July 1241 Raymond VII of Toulouse, besieging on Louis IX's orders, lifted his siege without launching a single assault.

On the night of 28–29 May 1242 inquisitors were massacred at Avignonet by some fifty or sixty men from the Montségur garrison. It was the trigger for the final expedition. On the orders of Blanche of Castile and Louis IX, Hugues des Arcis, seneschal of Carcassonne, and Pierre Amiel, archbishop of Narbonne, surrounded the mountain in May 1243 with a force put at anywhere from 6,000 to 10,000 men. Against them stood a garrison counted in the dozens — perhaps seventy to a hundred fighters — alongside 211 Perfects, pacifists who would not bear arms, and civilian refugees.

Despite the crushing imbalance the place could not be stormed, and a blockade set in. Early in the winter of 1243 a handful of climbers scaled the rock by night and seized the watchtower on the Roc de la Tour; a trebuchet was hauled up and assembled, and bombarded the defenders without pause — carved stone balls of 23 to 78 kilograms have been recovered on the site. About a month later the barbican fell, perhaps through local treachery. A last assault in February 1244 was beaten back, but it left the besieged too weakened to hold out.

On 1 March 1244, after ten months of blockade, Pierre-Roger de Mirepoix negotiated the surrender. The terms were precise: the lives of soldiers and laymen would be spared; Perfects who renounced their faith would be saved; and a fifteen-day truce would let the Cathars prepare themselves. In that fortnight some twenty-five people chose the opposite course, taking the ultimate Cathar vow of consolamentum.

On 16 March the fortress opened its gates. Around 220 men and women who refused to abjure were burned together on a pyre at the foot of the mountain — among them the wife, three daughters and mother-in-law of Raymond de Péreille, and soldiers of the garrison who would not abandon the people they had defended. It was reported that some sang. The Cathar fortress itself was destroyed; a stele raised later in the field remembered as the Camp dels Cremats, the field of the burned, marks the traditional site of the pyre.

The king gave the pog to Guy II de Lévis, and the Cathar village and its outer walls were razed. A royal stronghold rose in their place, held by a garrison of some thirty men until the Treaty of the Pyrenees in the seventeenth century — and it is this later work, labelled "Montségur III" by archaeologists, whose ruins crown the rock today. Excavations by the GRAME group between 1964 and 1976 concluded that no trace of the first fortress, nor of the one Raymond de Péreille rebuilt, survives within the present walls — a finding never widely published and still hotly disputed — though the terraced dwellings just outside the ramparts are confirmed Cathar habitations.

The legends began before the fall. Around Christmas 1243 the Perfect Mathieu and the deacon Bonnet slipped out on horseback carrying "gold and silver and a great quantity of coin", and four more men escaped with a load during the March truce — conjectured to have been the heretical texts kept by the Perfects. From Napoléon Peyrat's romantic rediscovery of the site around 1870 to Joséphin Péladan's claim in 1906 that the treasure was the Holy Grail and Montségur the Munsalväsche of Wolfram von Eschenbach's Parzival, the myth has never let go. The ruins have been listed as a monument historique since 1862, and in July 2026 they were inscribed by UNESCO among the Royal Capetian Fortresses of Languedoc.