The Saint-Philibert de Lanvern chapel is in Ploneour-Lanvern in Finistère.
It was built in the 11th century and dedicated to Saint Philibert ; it depends on a priory of the abbey of Landévennec.
In retaliation for the revolt of the Red Caps,in 1675 , the bell tower of the chapel is one of those decapitateds under the orders of Louis XIV and the Duke of Chaulnes, governor of Brittany.
The roof collapsed shortly after the Second World War, successive municipalities having done nothing to save the building.

The site was cleared by a troop of scouts and a cement screed poured on the ridge of the walls to prevent water infiltration in 1967-19682.