The origin of this wine is threefold: • Plots located outside the Enclos, in areas of Pauillac classified growths: These consist on the one hand of "Comtesse de Lalande", "Petit Batailley" and "St. Anne", which have belonged to the estate for more than a century and whose vines benefit from a high average age (around 40 years), synonymous with quality. And on the other hand of a seven hectare island of vines in the commune of Artigues on gravel terraces, which was acquired in 2005. • The estate's younger vine plants, consisting of recently replanted plots and of vine replacements in older plots. • Finally, even more severe selections made for Le Grand Vin (direct impact of the analysis made on the different parcels of l’Enclos) lead us to often downgrade very qualitative vats as well as press wines made from the best old vines parcels and integrate them in Forts de Latour. Les Forts de Latour receives the same meticulous care as the Grand Vin, both in the vineyard and in the winery. The only notable difference, apart from the origin of the grapes, is the proportion of new barrels (50%) used in the maturing stage. The proportions of the grape varieties in the wine vary from one year to the next but there is always a higher proportion of Merlot (25 to 30%) compared to the Grand Vin.