Around 2,200 years ago, ancient China's first emperor, Qin Shi Huang, began connecting many small walls to build the now-famous Great Wall of China. It eventually became over 13,000 miles (20,000 ...

The Great Wall of China spans many thousands of kilometres, the longest stretch running some 8850 kilometres. This part dates from the Ming dynasty (AD 1368 to 1644) and served as a physical ...