Mentioned for the first time in 1259, the château des Vallons is at this period the possession of several nobles, amongst them the Caumont and de Pis families. In the hands of the Albret family after 1390, the primitive castle on a motte of feudal land is in a state of ruin by the end of the Hundred Years War, after which the land of Verteuil is given in 1460 to Aymeric of Caumont, lord of Lauzun. The medieval remains comprise a rocky escarpment of stone, dressed and in places built up, forming a first walled fortification of around 80 metres in diameter against which lean the village houses on the north side. In the centre there is a curtain wall linking with the heptagonal and vaulted north-west tower, probably dating from the 15th century.

To the east, J. Gardelles* describes a section of wall of a room with a ceiling of groined vaults on sculpted corbels columns, probably from the end of the Middle Ages. To the south-east the main building – with a wing in ruins at right-angles to the north – was constructed at the end of the 16th or at the beginning of the 17th century for the de Caumont family. The west part was redesigned towards 1839, date of a building estimate established by Sarrazi for the installation of a school in this part of the château. Built in cut tufa stone, it forms a rough triangle the base of which probably comprised the south-east part of the main building and its apex the north-west tower. The Château des Vallons is partly classified HistoricMonument.