Château Giscours is one of the largest properties in the Médoc. The vineyard's soil consists of gravel on sandy-gravelly subsoil. The creation of a lake near the château has improved the soil's drainage. The exceptional terroir benefits from all of the factors necessary for the production of high quality wines: good orientation, very warm soil in the spring, root permeability, fertility, and regulation of the water supply in the summer. After family and financial difficulties, the property was taken over by Dutch businessman Eric Albada-Jelgersma in 1995. Since then, under the management of the enthusiast Alexander Van Beek, who has accomplished huge work both in the vines and cellar, the château has been brought back to former glory.

The Sirène de Giscours is a very elegant Margaux. The wine is made from the young vines of the property. It has a majority of Cabernet Sauvignon, making it a straight and typical Margaux wine. The elegant bouquet expresses blackberry aromas, and after a few years, cigar box. A wine to taste after aging for 3 to 10 years.