The Douro River flows through Portugal's breathtaking landscapes, including terraced vineyards, dramatic cliffs, and rolling hills. As you sail along the Douro, you'll be treated to stunning vistas and picturesque views that showcase the beauty of the region - dotted with charming towns and villages that have preserved their traditional character and architectural charm. Historic cities such as Porto and Lamego offer a glimpse into Portugal's past, with notable landmarks like Porto's Ribeira district and Lamego's Sanctuary of Our Lady of Remedies.

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The Douro River, also known as Rio Douro in Portuguese, is one of the major rivers in the Iberian Peninsula. It flows primarily through Spain and Portugal, with a total length of approximately 897 kilometers (557 miles). The Douro forms part of the border between Spain and Portugal for a significant portion of its course. The Douro River originates in the Sierra de Urbión mountains in northern Spain, near the province of Soria. Its source is at an elevation of about 2,160 meters (7,087 feet) above sea level.

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The Douro River Valley is renowned for its wine production, particularly the production of Port wine. The region's steep slopes along the riverbanks are adorned with terraced vineyards that produce high-quality grapes used in the production of Port and table wines. The terraced vineyards along the Douro River are a distinctive feature of the region. The carefully constructed stone walls that support the vineyards create a breathtaking landscape, blending natural beauty with human craftsmanship.​

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Most Douro River cruise itineraries travel roundtrip from Porto, though several one-way options exist between Porto and Vega de Terrón. If the itinerary doesn't already include it, pre- or post-cruise stays in Lisbon (Portugal) and Salamanca (Spain) are highly recommended.