Radzyń Chełmiński intrigues people from afar with the ruins of a Teutonic castle. It was once one of the most powerful strongholds in the Teutonic state. In its heyday, it was the second largest , after the castle in Malbork. Although today's ruins are only a reminder of the former power of the Teutonic fortress, its former grandeur can still be seen in the surviving walls. It is worth going down to the castle basements, where there is a torture chamber and a museum room, visiting the castle chapel and climbing the surviving towers, looking at the penitential cells along the way. Be careful - there are secret signs carved on the castle walls. It is a souvenir of episodes of the cult series "Car and the Templars" filmed here.