The winnowing machines of Casasola Curiosity · Casasola de Arión, Montes Torozos, Valladolid Image of Casasola de Arión, not of the place itself. From the thirties of the 20th century this village specialised in making winnowing machines, the machines that separated the grain from the straw. At the beginning of the fifties there came to be more than twenty firms devoted to them in a locality of few residents. Photo: Fundación Joaquín Díaz (CC BY-SA 3.0) What to see and do in Casasola de Arión