For centuries the best area in Toro D.O. to grow fruits, vegetables and plant vineyards has been known as "El Oro". Its privileged situation, close to the river Duero on the southrn part of the town of Toro, was perfect to avoid the early frosts in spring time. The area’s distinctive red soils have a base of clay and are covered by rolling stones making them ideal to grow grapes that mature slowly.
In 1999 the San Ildefonso family, pioneers in the area, carried out a selection of parcels around this privileged location to produce their "Pago del Oro" wines. Thanks to a constant and careful terroir selection, the San Ildefonso family are at the forefront of the new modern style of Toro with wines that offer great fruit concentration and structure.