Sarzeau, in the French department of Brittany, has after a 70-year hiatus seen a relaunch of wine production, an activity that had flourished in the area for centuries until the 1950s. The winegrowers Guillaume Hagner and Marie Devigne planted 25,000 vines on a site chosen by Town Hall, on which there was a mill.

The new building wraps around the renovated mill. Its fluid layout optimizes the winemaking process, from harvesting in the north to delivery in the south, all the while ensuring good thermal inertia.

A lime plaster mix containing local sands forms the walls of the curved composition. To the east, a built enclosure blends modestly into the landscape, housing the work of the winemakers. To the west, the walls of the wine cellar open to the surroundings, giving unobstructed views. The spaces for exchange, tasting, and museum presentation emphasize the evolution of enological practices and invite visitors to discover the history of the vineyards of Sarzeau.