The venerable Vega Sicilia, Spain’s most famous winery is located at Valbuena del Duero, 30 km east of the ancient university town of Valladolid. The northern boundary of the estate is marked by the main road that runs along the left bank of the Duero (Douro) river between the river bank and the hilltops are some of Spain’s most prized vineyards, on north-facing slopes at altitudes of 750-800m above sea level.