The Knights Templar were a group of people who lived a long, long time ago in a place called Europe. They were kind of like soldiers who fought to protect important places like churches and holy sites.
The Knights Templar had a special symbol called a seal that they used to show that they were part of the group. The seal was a picture of two knights riding on one horse. The horse had a cross on its back, which was a very important religious symbol.
This seal was like a badge that showed everyone who saw it that the person wearing it was a Knight Templar. It also helped the Knights keep track of who was part of their group and who wasn't.
Today, people are still fascinated by the Knights Templar and their special seal. Some people even make jewelry with the seal on it or get tattoos of it to show that they admire the Knights and their bravery.