French term for a winery. However, it does not necessarily have to be a "castle" or even a "castle-like building". Its use is therefore not tied to whether or not a castle is present; it is not uncommon for there to be none at all. However, individual, especially historical wineries do have splendid buildings that truly deserve this name. Among the most attractive are Château Beychevelle (Saint-Julien), Château Chasse-Spleen (Moulis), Château d'Issan (Margaux), Château Margaux (Margaux) and Château Pichon-Longueville Baron (Pauillac). More similar to a castle are Château Rauzan-Ségla (Margaux) and Château d'Yquem (Sauternes). There are over 4,000 châteaux in France, but the term is mainly used in Bordeaux. According to another explanation, however, "Château" is not derived from the French word for "castle" but from "Chai" (Chaisteau) for "barrel cellar". The correct name would therefore be "Chaisteau".