Pisan cross

The pisan cross is a special symbol that looks like a plus sign with wider ends. It is named after the Italian city of Pisa, where it was used in the Middle Ages.

One way to understand the pisan cross is to imagine a treasure map. On the map, there may be a big "X" that marks the spot where the treasure is hidden. The pisan cross is like that kind of mark, but instead of showing where treasure is hidden, it shows where something important or valuable is located.

In the Middle Ages, the pisan cross was used on maps and charts to show the location of important landmarks or buildings, like churches or castles. This made it easier for people traveling to know where they were and how to get where they needed to go.

Today, you might still see the pisan cross used on maps, especially in Europe. It's one of many symbols that people use to help them navigate and find their way around.