The 57 appellations of Bordeaux are not classified in a single official ranking. But the Médoc, Sauternes and Barsac, Graves, and Saint-Emilion districts do have their own official internal classification systems. Pomerol, one of Bordeaux's greatest assets, was not included in the 1855 Classification, and remains unclassified to this day. However, Château Pétrus is often included with the First Growths (Premiers Crus) of the 1855 Classification. The Classification of 1855 Much like our World's Fair today, Napoléon III's 1855 Expositon Universelle de Paris was a chance for France to display its very best for the world to see. The Gironde Chamber of Commerce requested that a classification system be devised to accompany their display of the fine wines of Bordeaux. The Bordeaux Wine Brokers' Union went to work on the project and came up with what we now refer to as the Classification of 1855.