Abbey church Déas site

Visit the Abbey church Déas site

Heart of the Déas site, the Carolingian abbey church was built at the beginning of the 9th century.

Abbatiale4 recadre2 scaled


The Carolingian abbey church
Remarkable for the combination of stone and brick, and the outstanding majesty of its massive pilasters, its checkered arches, this monument has been exceptionally well preserved. Classified as a historic monument, the edifice is a model of transition between Antique art and Medieval art and is a rare remnant of the Carolingian era. The abbey church shelters Saint Philibert’s reliquary.

image00227 scaledThe Simples Garden
Next to the abbey church, the garden is based on the Plan of Saint-Gall.
Medicinal, aromatic, tinctorial and ornamental plants cultivated at the time of Charlemagne are grown there in an educational way.


cc grandlieu abbatiale 2301210089 scaledLake and marshland birds
The wine press room hosts a permanent exhibition of Helmut Warzecha’s stuffed collection. About 40 emblematic birds of the lake and its marshes are shown to help you understand why the fauna of the surrounding wetland is so exceptional.


For an unaccompanied visit, an english guide-book is avalaible at the front desk.


Useful information

Opening times

From April to SeptemberFrom October to March French holidays of autumn, Christmas and Winter
from Tuesday to Sunday : 10:00-12:30 and 14:00 -18:30Wednesday, Friday, Saturday and Sunday : 14:00-17:30from Tuesday to Sunday : 14:00-17:30

Last ticket sale 15 minutes before closing.
Closed on bank holidays : May 1st. December 24th, 25th & 31th , January 1st.

Admission prices :

Self guided visitGuided visit :
Only in French
• Full price : 5 €
• Reduced price* : 3 €
• Full price : 7 €
• Reduced price* : 5 €

* visitors from 6 to18 years old , students, job seekers, people with disabilities and one accompanying person, groups (minimum 10 pers.)

Free : under 6 years old and tourism professionals


Accessibility :

Car park for disabled on site : parking « abbatiale » rue de la Souchais

Access :

How to get to the Site de l’abbatiale Déas

30 minutes drive from Nantes and 40 minutes from Pornic

By car : from Nantes périphérique sud, exit porte des Sorinières direction Saint Philbert de Grand Lieu, and follow  D178, as far as exit Saint Philbert de Grand Lieu.

By busLILA ligne 12 Nantes>Saint Philbert de Grand Lieu. Stop « Rue du port », 50 meters from the site.

Recommended car park : Parc de la Boulogne (D65, Avenue de Nantes), 200 meters from the site, secured footpath.