The Audomarois Marsh is one of the only wetlands in France where traditional market gardening continues on a significant scale.
The marsh system features over 160 kilometers of navigable waterways, largely created by human intervention since the Middle Ages.
The site sits at the junction of the river Aa and the expansive polder system of the Audomarois.
The museum highlights the unique 'water vegetable' culture, including the cultivation of local cauliflower and endive varieties.
The wetlands host over 300 different species of birds, making it a critical site for European migratory patterns.
La Maison du Marais serves as the primary interpretive center for the Audomarois Marsh, a UNESCO-designated biosphere reserve. The facility explores the symbiotic relationship between human cultivation and the surrounding wetland ecosystem. Visitors can explore a permanent exhibition detailing the history, biodiversity, and local gardening techniques of the marshes. The site offers boat tours conducted on traditional flat-bottomed boats known as 'bacôves' to navigate the narrow canals. The museum grounds include botanical displays highlighting indigenous flora and the traditional agricultural methods used by local 'maraîchers'. It acts as a gateway to exploring the 3,700-hectare wetland area surrounding Saint-Omer. Interactive displays focus on the hydrological challenges and conservation efforts necessary to maintain the marsh's ecological integrity.
The wooden jetty platform where the traditional flat-bottomed boats are docked.
Book boat tours in advance during peak season, as capacity is limited by the size of the traditional boats.
Bring binoculars for birdwatching, as the marsh is a prime habitat for herons and kingfishers.
Wear insect repellent during summer months due to the proximity of stagnant water channels.
Do not attempt to explore the narrow canals in private kayaks without checking local navigation zoning rules, as many areas are strictly reserved for guided tours.
Closed on Mondays during the low season; usually open daily during the peak summer months.
