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The Garabit Viaduct is a railway viaduct in France, designed by Gustave Eiffel. It was built between 1880 and 1884, and is located in the Massif Central. The viaduct is 460 metres long and 125 metres high, and was the tallest railway bridge in the world at the time of its construction. It is still a major railway artery in France, and is a popular tourist destination.