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Hadrian's Wall was 80 Roman miles or 117.5 km (73.0 mi) long; its width and height varied according to the construction materials that were available nearby.
One of the greatest monuments to the power - and limitations - of the Roman Empire, Hadrian's Wall ran for 73 miles across open country. By the time Hadrian became Emperor in 117 AD the Roman Empire had ceased to expand. Hadrian was concerned t...