the great wall of china

The great wall of china is one of the most recognisable places in china and the world. It's over 2,000 years old and it's as long as 22,000 kilometers  or 13,000 miles and was built to protect them from the Mongles. its made up of rock dirt, and it protects a part of Hong Kong and the nothern boarder. Most of it has been wercked by time that went by. Today it's one of the most famous monuments. And it's used for people to walk through and enjoy.