Marqués de Irún operates in Ribera del Duero, Castilla y León's premier wine region, where continental climate and slate-rich soils shape distinctive expressions of Spain's classic varieties. The winery produces Verdejo Blanco, a crisp white from the aromatic Verdejo grape, and Vidiana Tempranillo, drawn from the dark-skinned Tempranillo varietal that defines the region's character. Both wines have been assessed by major critics including Wine Spectator, Wine Enthusiast, and Wine Advocate. Ribera del Duero's elevation and diurnal temperature swings yield wines of structure and complexity, whether in the mineral-driven whites or the age-worthy reds that emerge from its terroir.