The Great Wall of China
220 BC-1644 AD
Multiple walls built over 1,800 years. The total length, including all branches and rebuilt sections, is over 21,000km. The Ming-dynasty stone-and-brick sections most tourists see are 600 years old.
220 BC-1644 AD
Multiple walls built over 1,800 years. The total length, including all branches and rebuilt sections, is over 21,000km. The Ming-dynasty stone-and-brick sections most tourists see are 600 years old.