1.  Great Wall of China is longest wall in the World. The length is around 13171 miles

2.  Great Wall of China was built in 220 BCE by Qin Shi Huang

 3. Great wall of China is not a single continuous wall it’s made up of various sections

4.  people belive in that wall can not be seen from space with the naked eye

5. Archeaologists have discovered that Great wall of China was built by special type of material that is Rice Flour