In 1855, Napoleon III commissioned the producers of Bordeaux to develop a ranking of the Bordeaux wine regions' wineries for the Exposition Universelle. The châteaux of Sauternes and Barsac were considered separately from the wineries of the Médoc. The rankings were based on reputation and the current prices of the wines from the various estates. There are three levels-Premier Cru Supérieur, Premiers Crus and Deuxièmes Crus. Château d'Yquem is the only Sauternes winery classified as a Premier Cru Supérieur. There are eleven Premiers Crus and fifteen Deuxièmes Crus.
Premiers Crus
Deuxièmes Crus