BURGOS.- Bodegas Portia is a new winery for the Faustino Group in the Ribera del Duero, one of Spain’s foremost wine-producing regions. The project is Foster + Partners first winery and was an opportunity to look afresh at the building type, using the natural topography of the site to aid the winemaking process and create the optimum working conditions, while reducing the building’s energy demands and its visual impact on the landscape. The 12,500 square-metre facility has a production capacity of one million bottles per year. The building’s trefoil design expresses the three main stages of production: fermentation in steel vats; ageing in oak barrels; and finally, ageing in bottles. These are controlled by an operations hub at the core. The wings containing the barrels and bottle cellar are partly embedded into the ground to produce the most favourable environmental conditions for ageing the wine, while the fermentation wing is exposed,