The estate is located in the municipality of Labarde in the area Margaux in the Médoc (Bordeaux). The origin of the property dates back to 1330, a vineyard or viticulture was first mentioned in 1552. Allegedly already estimated King Louis XIV (1638-1715) this wine. In the course of the French Revolution, the Saint-Simon family, which was then the owner, was expropriated in 1789. After several changes of ownership, the banker Comte of Pescatore bought the estate in 1847, had the magnificent château built and received Eugénie, the wife of Emperor Napoleon III. (1808-1873). After the Second World War it was purchased by Nicolas Tari, who had an eight-hectare artificial lake created to influence the microclimate. In 1970, son Pierre Tari took over (in 1976 he participated in the legendary Paris Wine Tasting ) the good that the sold to the Dutchman Eric Albada-Jelgersma in the early 1990s, that too Château du Tertre heard.
There was a major scandal in 1998 when illegal practices such as unauthorized must sugaring and the use of oak wood chips, especially for the second wine of the 1995 and 1996 vintages, were discovered. Jelgersma, who was obviously ignorant of the procedures, then exchanged a large part of the team including the oenologist. Today the Dutchman Alexander van Beek is primarily responsible at Château Giscours and at Château du Tertre. In the Bordeaux Classification in 1855 the estate received third place (Troisième Cru Classé). The total property covers 400 hectares of land. Of these, only 81 hectares are planted with the Cabernet Sauvignon (53%) and Merlot (42%) varieties. The extremely long-lived red wine is aged for 15 to 18 months in two thirds of new barriques. The second wine is called "La Sirène de Giscours".