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Following the success of the Bordeaux Wine Official Classification of 1855 at the Paris Exposition Universelle, the Comité d'Agriculture de Beaune tasked Dr. Jules Lavalle with coming up with a similar classification of the vineyards of the Côte de Nuits and Côte de Beaune for the 1862 International Exhibition in London. The history of the "tête de cuvée" and making wine from a single vineyard estate was more established in the Côte de Nuits than Côte de Beaune which was reflected in Lavalle's defining over 20 vineyards in the Côte de Nuits worthy of cru for red wines while the Côte de Beaune had only one exceptional vineyard. Lavalle's classification would serve as foundation for the official establishment of Grand cru and premier cru in the 1930s as "Appellation d'origine contrôlée" or AOCs. Today there are 24 Grand cru vineyards in the Côte de Nuits clustered around six villages and more than 100 premier cru vineyards throughout the region.