The Great Wall of China is one of the architectural wonders of the world. Stretching for over 21,000km - as far as London to New York and back, twice - it follows what used to be the border between China and Mongolia. Built over a period of 2,000 years by millions of conscripted workers, it’s been the subject of myths and legends for centuries. But who really built the Great Wall, and how? Is it true that those who died at the Wall were buried within it? What purpose did it serve? And can this incredible structure really be seen from space?

A Noiser production, written by Fiona Veitch-Smith. With thanks to William Lindesay, a geographer, explorer, conservationist, and leading expert on the Great Wall of China.

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