What's the most trod-upon place on the planet?

http://www.guardian.co.uk/theguardian/2013/jan/16/most-frequented-place-in-the-world

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<strong>Where, on earth, have more people been than any other place? Throughout all of human history, which piece of land has seen more footprints than anywhere else?</strong>

<em>Sam Firth, Salford</em>

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