The Déas Abbey-church site

The abbey-church in the heart of the site was built at the beginning of the 9th century. As the oldest monument of Loire-Atlantique, only vestige of the ancient monastery, the abbey is a rare vestige of Carolingian architecture in Europe. The Simples Garden, near the abbey church and the river Boulogne has been designed following medieval monastic gardens and gives the opportunity to discover medicinal, aromatic or tinctorial plants cultivated at the time of Charlemagne.