Great Wall of China, Definition, History, Length, Map, Location, & Facts

Great Wall of China, an extensive bulwark erected in ancient China, one of the largest building-construction projects ever undertaken. It actually consists of numerous walls—many of them parallel to each other—built over some two millennia across northern China and southern Mongolia.

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Great Wall of China - Length, Map & Facts

Great Wall of China, Definition, History, Length, Map, Location, & Facts

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Great Wall of China - Length, Map & Facts

How Long Is the Great Wall of China? Half the Equator!