Bibracte is a place that was very important a long, long time ago, before you and I were born. It was in a big area that is now called France, and it was where some people called the Celts used to live.
The Celts were very smart and learned how to farm, build houses, and make things like jewelry out of metal. They also had their own language and beliefs.
Bibracte was a big hill where the Celts built a big town. They had all sorts of things in their town like houses, workshops, and even a big wall around the town to help protect them from other people who might want to come and take their things.
The Celts who lived in Bibracte were very important because they traded with other people who lived far away. They also knew how to make things that other people did not have, so they became very wealthy.
Today, Bibracte is a place where people can go to learn about the Celts who lived there a long, long time ago. People can see the old buildings, jewelry, and tools the Celts used to use. It's a cool place to visit if you like learning about history!