Cillar de Silos continues a centuries-old tradition of cherishing the best fruit of the land. In medieval times, people around the village of Quintana del Pidio brought the finest products of their harvest to the monastery of Silos to ensure blessing for the next harvest. The friars gathered the best wines of the area in their cellars, and thus the cellar of the monastery of Silos became the place to age the finest local wines. In the 21st century, the monastery is gone but Cillar de Silos preserves their tradition.

The Aragón family has made wine for personal consumption for as long as records go, but in the 1970s Amalio Aragón started to systematically acquire top vineyard sites in Ribera del Duero. The area had started to emerge as the new area for Tempranillo, and in 1982, the new classification of Ribera del Duero Denominación de Origen (DO) was created. Within the Ribera, vineyards around the village of Quintana del Pidio seemed particularly promising for fine wine production, and that is precisely where Amalio Aragón expanded his vineyards. 1995 was the first vintage of Cillar de Silos, and the wines have gained reputation ever since.

Today, the company produces over 340,000 bottles per year from high-altitude vineyards surrounding the village of Quintana del Pidio, and is still growing. International wine press has praised the quality of Cillar de Silos wines, and in 2010 the Torresilo won the Ribera del Duero Trophy at the International Wine Challenge. The domestic Spanish market takes still a large proportion, but Cillar de Silos wines are now sold around the world on five continents.