The Douro Demarcated Region

The Lower Corgo is the most westerly subregion, being less mountainous and the oldest viticultural area of the region. It still possesses the largest proportion covered with vines—37% of its total area and 

FIGURE 5.5 The Lower Corgo, the Upper Corgo, and the Upper Douro (IVDP, IP, collection). 

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The name of "vinho do Porto", "vin de Porto", "Porto", or port wine comes from the city of Oporto (Porto), the second largest in Portugal. Curiously, port wine is more related to the city of Gaia, located in the south side of the estuary of the Douro River, and the Douro Demarcated Region (DDR), located a few hundred kilometers east of Oporto city. 

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