Dating from the 12th century, La Tour Carnet is a genuine medieval castle with a moat. The oldest château in the Médoc, it owes its name to the equerry Carnet, who fought valiantly beside Lord Jean de Foy. Carnet's courage and devotion were such that he ended up inheriting the estate. Éléonore, the sister of Michel de Montaigne, was one of several illustrious owners during the 16th century. The current owner, Bernard Magrez, has expended an enormous amount of time and energy in renovating the estate. His efforts have concerned the vineyard, the cellars, and the château. Care is taken during pruning, leaf thinning, and green harvesting to reduce yields in the interest of quality. The grapes are hand-picked into small crates and sorted by hand before being transferred by gravity flow into wooden fermentation vats and then into barrel. These are just a few of the practices that contribute to the excellence of this estate that was included in the prestigious 1855 classification.