The Château de Goulaine is a former castle, now a château, in the Loire Valley located near Nantes, France. This castle has been home to the family of the marquis de Goulaine for over a thousand years. Château de Goulaine is also the estate-bottled wine produced at the château.
While it is not clear exactly when the estate vineyard started producing wine for commercial use, rather than just family consumption, the millennium during which the estate of Château de Goulaine has been producing wine makes it the oldest known wine business still in existence; It is believed to be the third oldest commercial enterprise in the world. It is considered the oldest European family owned business. The castle estate is one of the last Châteaux de la Loire to still be producing wine.
In addition to producing a Muscadet, Château de Goulaine also produces a Sancerre and Vouvray as well as what is believed to be the first commercial Chardonnay in the western Loire Valley. The estate also grows some Folle blanche.