A Subway train about to cross an iron bridge across the Douro River, Portugal

Subway train about to cross an iron bridge across the Douro River. Eiffel of Eiffel Tower fame designed this elegant bridge; the one closer to the Port storage huses in Gaia were designed by an associate. [Compare another picture of trains crossing this bridge] Photograph and text by George P. Landow. [You may use this image for any noncommercial purpose as long as you credit the photographer and this URL].

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