after an hour or so the travellers reached the other side of the country and came to another china wall.
Many places in the world are surrounded by walls but why do humans build walls around their countries, cities and homes? Explore these websites and videos to find out more about walls.
Newsround: six famous walls that have made history
Some walls are built of stone or brick, but did you know you can also use dirt?
One of the most famous walls in history is Hadrian’s Wall, built by the Romans in the north of England.
Challenge yourself!
Your mission is to design your own fantasy wall. Take inspiration from the amazing walls above and also walls you see when out and about. Think about the materials would you use to build your wall and what the wall is going to protect. It can be real or imaginative.
You can also look at the Help with Challenges page to come up with your own wall challenge.
