The Château Cos d'Estournel is a vineyard of 67 hectares, located in Saint-Estephe in the Gironde. Cos d'Estournel is an AOC in the Medoc which is part of the Saint-Estephe appellation and classed a Second Growth in the official classification of Medoc wines in 1855. The vines are 60% Cabernet Sauvignon, 40% Merlot and a small percentage of Cabernet Franc. The vineyards spread over thirty plots that average 35 years old. The Château Cos d'Estournel also produces a second wine called Les Pagodes de Cos, from vines aged less than twenty years.