Château Caillou is a 40-acre estate in Haut-Barsac. Most of its vineyards are designated as Grand Cru Classé according to the 1855 classification. Although the estate was producing wine in the 17th and 18th centuries, its modern history dates from 1909 when Joseph Ballan acquired it. He passed it on to his daughters. Today the estate is run by the founder’s granddaughter, Marie-Josee Bravo, and her husband and sons. Château Caillou makes a highly regarded Sauternes, several second label Sauternes, and a dry white wine.