Classification of Saint-Émilion wine
In 1955, the wines of Saint-Émilion in the wine-growing region of Bordeaux were classified. Unlike the Bordeaux Wine Official Classification of 1855 covering wines from the Médoc and Graves regions, the Saint-Émilion list is updated every 10 years or so.
Source: Wikipedia — Classification of Saint-Émilion wine (CC BY-SA 4.0)