Domaine Le Mezo is a 25-hectare estate at Ploeren, 10 minutes from Vannes in South Brittany. Built around a renovated château on the site of a 15th-century manor, it sits inside the Parc Naturel Régional du Golfe du Morbihan. Couples take the whole estate for a single wedding across a full weekend, with private use of the château, its 19th-century outbuildings, and the surrounding park.

Receptions centre on La Grande Salle, a 440 m² hall of exposed stone and oak beams under an 8-metre ceiling that seats up to 350. A heated safari tent adds room for a further 300 at table, or 600 for a standing reception, while a 19th-century greenhouse, the château terrace, and the open park each offer a ceremony or drinks setting. Catering is in-house, from a kitchen holding 2 Gault&Millau toques and cooking with local, seasonal, and organic produce.

The estate sleeps up to 240 across the château, restored farmhouses, dormitory lofts, heated yurts, and a cluster of wood-built eco-lodges. An 18-metre indoor pool, a spa and yoga studio, and tennis and pétanque courts sit among the 25 hectares of parkland. Le Mezo runs on a biomass boiler and solar panels, and its sustainability work has been recognised by the Marque Bretagne and 2 responsible-event awards.