The estate was formerly owned by the Marquis de Civrac and later transformed into a modern agricultural and fish-farming model in the 19th century.
The reservoirs act as a critical sanctuary for the Common Shelduck and the Eurasian Spoonbill during winter migration.
A series of sluice gates are still utilized to regulate water levels and manage the salinity of the internal basins.
The park is divided into two distinct zones: Certes to the west and Graveyron to the east, separated by the Audenge port area.
Archaeological remnants of early salt production sites have been identified within the perimeter of the marshes.
The Domain of Certes-Graveyron is a 530-hectare protected natural area managed by the Conservatoire du littoral on the Arcachon Basin. The site comprises a unique mix of salt marshes, woodland, and former fish farming reservoirs that serve as a crucial habitat for migratory birds. It features an extensive network of dikes that allow visitors to walk between the freshwater and saltwater ecosystems. The property houses a 19th-century chateau, though access to the interior is strictly limited. The landscape has been heavily shaped by historical human activity, specifically the conversion of wetlands into reservoirs for fish production. It functions as a public park focused on ecological preservation and environmental education. The trails are flat and largely exposed, providing expansive views across the bay towards the Cap Ferret peninsula.
The elevated path between the reservoirs where the reflection of the sky meets the water, framing the distant silhouettes of Cap Ferret.
Bring binoculars as the elevated dikes offer excellent vantage points for long-distance birdwatching.
Apply sunscreen and wear a hat, as there is virtually no shade along the primary dike trails.
Check the tide charts before visiting, as the visual character of the marshes changes significantly between high and low tide.
Attempting to walk through the marshlands off the designated dike paths, which can damage sensitive ecosystems and cause injury.
The park is closed on Mondays and Tuesdays year-round; sections may be periodically restricted for ecological conservation.
Dogs must be kept on a leash at all times to protect nesting bird populations; cycling is prohibited on most dike paths.
