An abbey (11th-14th century) was founded at the end of the 6th century by MEWEN. Destroyed by the Normans in 919, an abbot by the name of HINGUETON, undertook reconstruction work on the abbey in its present place in 1024. In 1074, the remains of the founder saint were placed in the Abbey and thus began the pilgrimages. Listed as a Historical Monument, the former abbey was disorientated around 1850 for convenience. In 1993, a Roman wall (10th century) was uncovered. The abbey's south window contains stained glass fragments among the oldest in Brittany (12th-14th century). In St-Vincent Chapel, there are frescos (end 14th beginning 15th century) depicting the life of St-Méen.
