Abbaye Notre-Dame de Coatmalouen

Abbaye Notre-Dame de Coatmalouen is a ruined Cistercian abbey in the commune of Kerpert, in the Côtes-d'Armor department of Brittany, roughly twenty kilometres south of Guingamp on the historic border between Cornouaille and Trégor.

When was the abbey founded?

The monastery was established in 1142 at the initiative of Alain le Noir, count of Penthièvre. Its founding monks came from Bégard, the first Cistercian house in Brittany, established in 1130, and Coatmalouen was the fifth and last daughter house that community established. The site's name is linked to a hermit called Malouen, said to have lived in the surrounding forest, which suggests the abbey was built over an earlier hermitage rather than on untouched ground.

What happened to the community over time?

The 14th century brought hardship: the monastery had backed Charles de Blois during the War of the Breton Succession, and his defeat by John de Montfort in 1341 left the abbey to bear the material consequences of choosing the losing side. A second turning point came in 1526, when Coatmalouen was placed under the commendam system. From that point, its revenues and formal oversight passed to an abbot who did not have to live on site, an arrangement that gradually let monastic discipline slip and left the buildings increasingly neglected.

What survives on site today?

The most substantial remaining structure is the 18th-century abbey church, now roofless but still striking for its tall facade, capped with a triangular pediment. Other monastic buildings that once surrounded it did not survive later centuries intact. The ruins were listed as a monument historique by decree on 20 April 1964, a formal recognition of their historical and architectural value.

Where exactly is the abbey located?

Coatmalouen lies within what used to be the large parish of Ploëzal (Ploegeau), later split into three separate communes: Kerpert, Saint-Gilles-Pligeaux, and Saint-Connan. The ruins sit at approximately 48.402 N, -3.105 E, placing them in a quiet rural stretch of central Brittany, away from the region's busier tourist routes.

Frequently asked questions

Is the abbey still an active monastery? No. The community was abandoned well before the French Revolution, and only the ruins of the former abbey church and parts of its surroundings remain today.

What religious order did the monks belong to? They were Cistercians, tracing their lineage to the mother house at Bégard, the order's first foundation in Brittany, founded in 1130.

Where does the name Coatmalouen come from? It refers to a hermit named Malouen, who local tradition holds lived in the forest here before the Cistercian community was ever established.

Why did the abbey decline? The turning point was the introduction of the commendam system in 1526, which handed control and income to abbots who did not reside at the monastery. That arrangement weakened monastic discipline and accelerated the buildings' decay, compounding damage already done by the 14th-century War of the Breton Succession.

What can visitors see there now? The main surviving feature is the imposing, roofless facade of the 18th-century abbey church along with the ruins around it, protected as a listed historic monument since 1964.