Great Wall of China

This guide to the Great Wall of China follows General Qi Jiguang, brought in from the coast in 1568 to rebuild a crumbling northern frontier against Mongol raids. It traces the system he built into the bricks themselves and the dense run of watchtowers he packed along this ridge. You'll also hear about an unusual triple-tower garrison house on this stretch, unlike any other section of the wall. Look for the names still pressed into the clay underfoot as you walk.