Mairie déléguée de Montmartin-en-Graignes

Mairie déléguée de Montmartin-en-Graignes is a former village town hall that now serves as a local administrative office within the commune of Carentan-les-Marais, deep in the Manche department's marshland heart of Normandy. It's the kind of place you could drive past without a second glance, yet it sits at the threshold of one of Normandy's most distinctive landscapes — a flat, waterlogged expanse of hedgerows and canals where wartime history and rural life quietly overlap.

What is a mairie déléguée, and why isn't Montmartin-en-Graignes its own commune anymore?

On January 1, 2019, Montmartin-en-Graignes ceased to exist as an independent commune. It merged with Carentan, Brucheville, Catz, Saint-Hilaire-Petitville, and Vierville to form the new commune of Carentan-les-Marais. The old town hall didn't disappear — it was reclassified as a "mairie déléguée," a local office that still handles residents' administrative needs close to home, even though governing decisions are now made at the level of the wider commune. The building stands at 3 route de l'Abbé-Bihel, 50500 Carentan-les-Marais, and welcomes visitors on Tuesdays from 9:00 a.m. to noon.

Where does the name Montmartin-en-Graignes come from?

The village's name stretches back to the Middle Ages: records from 1248 call it Monte Martini, and a decade later, Mons Martini. For centuries it was known simply as Montmartin, and only in 1801 did the suffix "en-Graignes" get attached, referencing the neighboring marshland district of Graignes. Between the reign of Louis XIV and the French Revolution, three salt marshes operated in the area — Neuve, du Pas, and des Vignes — remnants of a once-thriving salt-harvesting trade drawn from the wetlands.

What role did this area play during D-Day?

Montmartin-en-Graignes sits in a stretch of Normandy that became a critical staging ground during the summer 1944 landings. The village itself was liberated by American forces in mid-June 1944. A short distance south lies Carentan, the town the 101st Airborne Division had to fight through to link up the Utah Beach and Omaha Beach landing zones — a battle later brought to wider attention by the television series Band of Brothers. A quick drive away is Sainte-Mère-Église, one of the enduring symbols of the liberation of Normandy, where a paratrooper effigy still hangs from the church tower in memory of the 1944 airborne assault.

What else is worth seeing nearby?

The region's real draw is its landscape. Montmartin-en-Graignes lies within the Cotentin and Bessin Marshes Regional Nature Park, a protected area covering nearly 150,000 hectares across 150 communes, of which 30,000 hectares are wetlands — flood meadows, heathland, and the dense hedgerow network typical of Normandy's bocage countryside. The Vélomaritime cycling route runs through the area along a former railway line, and flat-bottomed boats glide along the Taute and Douve rivers, evoking the bayous of Louisiana. It's also a strong destination for birdwatchers, with the park regularly organizing guided outings to spot storks nesting among the reeds. A few kilometers away, Carentan-les-Marais itself offers a marina, medieval arcaded buildings, and the central Place de la République.

Frequently Asked Questions

Is Montmartin-en-Graignes still a separate commune? No — since January 1, 2019, it has been part of Carentan-les-Marais, and the former town hall now operates as a mairie déléguée.

What are the opening hours of the mairie déléguée? The office at 3 route de l'Abbé-Bihel is open to the public on Tuesdays from 9:00 a.m. to noon.

Where does the "en-Graignes" part of the name come from? It was added in 1801, referring to the neighboring Graignes marshland district — before that, the village was simply called Montmartin.

What's worth visiting nearby? Pair a visit with the Cotentin and Bessin Marshes Regional Nature Park, a boat trip on the Taute and Douve rivers, and the D-Day landmarks of Carentan-les-Marais and Sainte-Mère-Église.