These ruins are testimony of the stately architecture of the Romanesque and Gothic periods, which spread later in the Pyrenees, between the eleventh and thirteenth century for the first and between the fourteenth and sixteenth century to the second. Each is marked by its own evolution, that of its construction, its functions, its occupants, but especially its relation to the history of Comminges County. This feudal state appeared between the tenth and eleventh century, located between the upper valley of the Garonne and its capital Muret, near Toulouse, played an important role in the power struggles that opposed royalties and nobles of central Pyrenean border control. In order to assert its political role by monitoring the integrity of its territory, the Comte de Comminges organized, from the thirteenth century, a system administered territories to a parent or vassal-lord. In the Middle Ages, two important feudal lords shared the three valleys, the lordship of Izaut or Frontignes, and the barony of Aspet. These lordships played a key military role in the Comminges County, one strategically installed at the margins of the county of Foix, the other at the margins of the kingdom of Aragon and the Viscount of Bearn. They also allowed the economic control of secondary roads and trans-frontiers used by shepherds, pilgrims and traders. They also offered protection to their people, bourgeois, artisans, peasants, and men of faith, against their loyalty. To this end, the three valleys were once dominated by a network of small fortifications allied to the two main strongholds of Izaut and Aspet. Many of them have disappeared, nevertheless it remains:
– The Castet site (district Izaut -de- Hotel)
– The Tower of Chucaou (town of Aspet)
– The Plech Castle (district Encausse-les-Thermes )
– The Estelle Castle (town of Cabanac Cazaux )
– The Campels Castle site (town of Arbon )
– The Castérot site (district Estadens)
The Association of the Seven Hills is conducting a study of the lordship of Izaut and its castle, as a consolidation project and enhancement of the heritage of the region of Izaut.