Which Bordeaux chateau is known for producing Los Vascos?

The Bordeaux chateau known for producing Los Vascos is indeed Lafite. This estate is situated in the Pauillac region of Bordeaux and is recognized for its high-quality wines and prestigious reputation. In the 1980s, Lafite began exploring opportunities outside of France and established a vineyard in Chile, known as Los Vascos. This project aimed to replicate the success of Lafite in a different terroir, utilizing the unique climate and soil conditions of the Colchagua Valley. The wines produced at Los Vascos reflect the French influence of Lafite while also showcasing the distinct characteristics of Chilean viticulture.

The other choices refer to well-known Bordeaux estates but do not have any connection to Los Vascos or its production. Lafleur, Margaux, and Pichon Longueville are all iconic properties in Bordeaux but focus their efforts entirely on wines made within the Bordeaux region itself, rather than expanding their production to locations like Chile.