Ownership of this winery is amongst Javier Alen, Victor Rodriguez, and Eulogio Calleja (one of the most respected winemakers in the region of Rueda).  The famous winemaker, Eulogio Calleja, uses a blend of 50% Verdejo and 50% Viura/Sauvignon Blanc to make Las Brisas. Naia is 100% Verdejo which is aged for 4 months to accentuate the varietal characteristics of varietal.  Naiades is crafted from the oldest ungrafted vines of Verdejo and aged for 8 months in French oak.  The winery, Viña Sila, is located in the denomination of origin of Rueda, on the southern bank of the Duero River . It is the only D.O. in the Castilian region with an historical tradition of making great white wines.  The winery owns 40 hectares (96 acres) in the village of La Seca which is considered by experts the "Grand Cru" of the denomination. Dispersed amongst the vineyards which are locally known as majuelos are 5 hectares in 8 small plots, and are planted ungrafted pre phylloxera Verdejo vines in sandy soils; the average age of these vines is 90 years with most of the vines over 100 years in age.  The vineyards are situated on alluvial soils which are sediments of the ancient riverbed of the Duero . The soils are characterized by a top layer of gravel 2 meters deep that sits on a layer of clay. This marks the beginning of the Phreatic layer.  Continental climate with cold winters, hot summers with large temperature fluctuations between day and night during the growing season. There is scant rainfall in this semi-arid region.