Furstentum is a steep, south to southeast-facing Grand Cru vineyard located between Kientzheim and Sigolsheim, known for its warm microclimate and complex limestone soils with marl and sandstone components. The site excels with Gewurztraminer and Pinot Gris, producing opulent, aromatic wines with weight, spice, and depth, though Riesling also thrives here with a more generous, textured profile. Wines from Furstentum are bold and ageworthy, often showing both power and underlying mineral tension.