Freiburg circles are round shapes that are used to help people understand the structure of a city called Freiburg. They are like little circles on a map that show different parts of the city, like the old town and the university.
Think of it like a puzzle. When you put the circles together, they show you a big picture of Freiburg and how all the different parts fit together.
People use the Freiburg circles to help them navigate around the city and understand where things are in relation to each other. It's like having a map with pictures instead of just words.
So the next time you go to Freiburg, look out for the circles and you might just understand the city a little bit better!