Grange cistercienne de Fontcalvy, Monastic grange in Ouveillan, France.

Grange Cistercienne de Fontcalvy is a ruined stone building near Ouveillan, with light tan rectangular blocks forming a tall, roofless facade with jagged upper edges. Three vertical sections project slightly forward; openings include a square window upper left, a tall rectangular opening in the middle, a large opening on the right, and a lower slit on the left. A small stone bracket is fixed to the right section. The fortress measures 20 by 70 metres.

Construction took place between 1297 and 1320 as a sheep shelter and storage facility for Fontfroide Abbey. The defensive features were built to protect valuable supplies from theft and raids.

The name reflects its past as a storage facility for a Cistercian abbey. The sturdy walls and defensive design show how medieval monks protected their goods and managed their agricultural resources.

The building stands about 15 kilometers south of Narbonne along road D13 and is entered through an eastern tower entrance. Wear sturdy shoes since the ground is uneven and the structure sits in open countryside.

Of the 24 granges that belonged to Fontfroide Abbey, this one preserves the most complete original medieval elements. Its defensive architecture is rare compared to other agricultural buildings from that period.