A city of northwest Portugal near the mouth of the Douro River north of Lisbon.

波尔图葡萄牙西北部一城市，位于里斯本北部，杜罗河口附近。

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A train lays down the embankment with the locomotive underwater in the Douro River, after it rammed into a boulder which derailed the train Monday Dec. 11, 2000 in Baiao, northern Portugal.

一列火车周一在葡萄牙北部的拜尔撞上一颗造成火车出轨的大石后瘫痪在河滨上，火车头则栽进斗罗河里。

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Warehouses emblazoned with company names that recall British and other foreign founders line the south bank of the Douro River, and most have guided tours and tastings.

BBC: The changing landscape of the Douro River Valley

Although all Port, produced in the Douro River Valley of Portugal, is made the same way (partially fermented wine is fortified with a neutral spirit, which stops fermentation and raises the alcohol level), there are two distinct types: ruby and tawny.

WSJ: Why You Should Make Time (and Place) for Port | On Wine by Lettie Teague