CURIOSITIES

• It's said that died between two and three million people during his construction. It's the longest project of the world, that lasted centuries. 
• it's belived that is the only construction made by the human that can be seen from the space.
• It's 21.196 km long. 
• In the antiquity,the Great Wall of China it was called Wall of the ten thousand Li. This name is refere of the lenght of the wall.  
• No one said " we are going to construct  the Great Wall of China"