How Does The Great Wall: The BIGGEST Structure in the Universe Work?

The Great Wall is like a super-long fence built by lots of people over many years, it's not the biggest structure in the universe, but it’s really big and works like a giant team effort.

Imagine you and your friends are building a wall around your toy castle. You each take turns adding bricks or sticks to make it taller and longer. That's kind of what happened with the Great Wall, emperor after emperor, and worker after worker, added pieces to the wall so it could protect people from enemies.

The wall is made of stone, brick, and even wood. These materials are strong like your blocks when you build towers in the sandbox. Some parts are high up, like a ladder, while others are flat, like the ground you walk on.

If you stretched out your arms as wide as they could go, that's about how long one piece of the wall is! And there are hundreds of these pieces all connected together, like links in a big chain. That makes the whole thing super-long, so long it feels almost like it goes around the world.

It’s not the biggest structure in the universe, but it’s like a giant hug from ancient China to help keep people safe!