In the heart of the regional nature reserve of the Brière marshland (second-largest marshland in France, after La Camargue), this inhabited rural territory is renowned for being exceptionally rich in heritage sites, fauna and magnificent landscapes.

In Rozé, after strolling along the canal over to the Pierre-Constant reserve, the observatory offers a deck with a rare panoramic view of water meadows, ponds and reed beds, along with a glimpse of Saint-Nazaire’s faraway naval shipyards on the horizon. In the summer, the path running through the nature reserve offers a chance to visit different ornithological observation stations.



  • GPS: Rue de la Petite-Brière 44550 Saint-Malo-de-Guersac.
  • Parking: to the left of the entrance of Rue de la Petite-Brière.


Possible to borrow binoculars every day in July and August, as well as on weekends from April to October.

Digital hike

“Immersion en Brière” (in French and English) can be downloaded onto your phone.

Where to eat

Éric Guérin’s La Mare aux oiseaux – a Michelin-starred restaurant:
On Île de Fédrun, Éric Guérin has built an establishment reflecting his personality. After modeling every detail of this abode, it has become “his home,” offering him both roots and strength.

Full travel guide

Le voyage à Nantes
Logo La Baule - Guérande
Saint Nazaire Renversante