The Château d'Alleuze is a ruined castle situated in the commune of Alleuze, in the Cantal département of France. Built in the 13th century by the constables of Auvergne, it belonged to the bishops of Clermont. During the Hundred Years War it was seized for the English by . For seven years, he sowed terror throughout the region, pillaging and holding to ransom. To avoid troubles from any Garlan successors, the inhabitants of Saint-Flour burned down the castle in 1405. Monseigneur De la Tour, owner of the castle, was very upset with this gesture, and obliged the Sanflorains to rebuild it on the original plan. It was taken by Huguenots in 1575. The towers were used as jails by the bishops of Clermont.