Great Wall of China Lookout Point at Badaling

Great Wall of China, Badaling, China

Read a guide to The Great Wall of China (万里长城) the world's largest man-made structure built along China's northern frontier.

Great Wall of China, Beijing, China.
© Russell Uebergang

The Great Wall of China is a massive, 21,196-kilometer (13,171-mile) series of fortifications built over 2,000 years (7th century BC to 17th century AD) to protect Chinese empires from northern invaders. It is not a single continuous wall, but a network of walls, watchtowers, and fortresses, primarily built from stone, brick, and compacted earth.

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