Château Giscours is located on 4 croupes, or gravely rises. These are steep and well-drained, with superb soil composed of medium and large gravel. The meagre, permeable soil has a high percentage (40 to 50%) of pebbles, which accounts for the wine's excellent quality.
The gravel is mixed with coarse sand at subsoil level, which enables the vines to take root deeply. This soil, coupled with the temperate Médoc climate, creates ideal conditions for making fine wine.