THE BEST PORTO WINERIES
The wine region follows the course of the Douro river down from the Spanish border to a point near the town of Mesão Frio, about 90 kilometers from the city of Porto (Oporto). Here the Serra do Marão rises up, protecting the region from the influence of the Atlantic Ocean.
Rain falls mainly on the western side of the Marão range, and to a certain extent in the western end of the Douro wine region, but dwindle further up-river, and by the Spanish border conditions are almost desert-like.
The Douro region is divided into three sub-regions: from west to east the Baixo Corgo, Cima Corgo and Douro Superior. The fertile, cooler, rainier Baixo Corgo, closest to the Serra do Marão, is the sub region with the most vineyards.