The most famous inhabitant of the castle was without doubt Erazem of Predjama, who is the subject of several well-known legends. In the castle, you can see a variety of original items, as well as replicas and models. The castle room with the largest number and variety of exhibits is the knight's room, in the dining room, you can learn about the late Gothic period, and the Renaissance hall on the third floor features the hunting trophies of the castle's last owner, Prince of Windischgrätz.

Between June and September, you can also visit the picturesque Cave under Predjama Castle.