Simancas is a historic town on the banks of the Pisuerga River in the province of Valladolid, in the region of Castile and León. Its vernacular architecture is characterised by traditional stone and brick houses with red-tiled roofs, arcaded streets, and elegant Renaissance buildings. Significant landmarks include the Castle of Simancas, which houses the renowned General Archive of Simancas, the Church of El Salvador, and the medieval bridge over the Pisuerga. The surrounding countryside is devoted to cereal cultivation, vineyards, and livestock farming, benefiting from the fertile river valley.