The cooperative winery that gave rise to Protos Historical milestone · Peñafiel, Campo de Peñafiel, Valladolid Image of Peñafiel, not of the place itself. Eleven wine growers of the villa founded that day the cooperative winery that would be the germ of the Ribera del Duero designation of origin, officially recognised in 1982 with tempranillo as its main variety. 29 de marzo de 1927 Photo: Barcex (CC BY-SA 3.0) What to see and do in Peñafiel