Château Caillou is entitled to both the Barsac and Sauternes appellations, and was included in the 1855 classification. The vineyard has remained the same size since then: 15 hectares in a single block between châteaux Climens and Myrat. Château Caillou's subsoil is made up of limestone and shallow sandy-gravel.

Caillou, Les Erables de Caillou (second wine), Château Caillou Cuvée Prestige, Cuvée Reine (exceptional vintage), Cru du Clocher (Red Bordeaux Superieur), Caillou Sec (White dry Bordeaux)