The Great Wall of China (长城) spans over 20,000 km — the world’s largest construction project, built over 2,000 years.
History
First walls built during Warring States (475-221 BCE). Emperor Qin Shi Huang unified them. The most-visited sections today are Ming Dynasty (1368-1644) restorations.
Sections
Badaling: Most accessible, most crowded, near Beijing.
Also worth reading:
Mutianyu: Restored, less crowded, with toboggan — our recommendation.
Jinshanling: Wild, unrestored — best for hikers.
Explore more in our Chinese Culture Complete Guide.