The Great Wall of china was built in 221 BC

Under the order of Qin shi huang to keep there enemy's out

It is a rumor you can see the Great Wall of china from space, Neil Armstrong proved this false

The great was is not one wall it is several walls added together after diffeent dynasties

The wall is made of different materials, mostly stone, compact earth and wood

Reconstruction of the wall begin In the 14th century to help fix the damaged wall