The Great Wall of China is a wall across northern China. It is over 5,500 miles long!

The wall was built by peasants, slaves, criminals, and other people that the emperor decided to punish.

There are over 7,000 lookout towers that are part of the Great Wall.

It is the longest man made structure in the world.

Soldiers used to make smoke signals from the lookout towers to warn of an attack.

The Chinese invented the wheelbarrow and used it when building the Great Wall.

Over 10 million people visit the Great Wall of China every year.

The Great Wall has been compared to a dragon which winds its way over and around the mountains.

The Great Wall is wide enough in some places to drive a car over it.

The Great Wall was built to protect China from Mongols and other invaders but also kept Chinese citizens from leaving China.