The Dürnitz, later also known as the banqueting hall and commonly referred to as the Knights’ Hall, is a vaulted room dating from the 15th century. The preserved ribbed vault is supported by a hexagonal Gothic central column, which extends through the cellar level below down to the bedrock in the floor. The Dürnitz served as a heated dining and common room for servants and guards. When required, it was also used as a place for assemblies, consultations, and negotiations. Through a pointed-arch doorway, one entered a small antechamber, from which a door with a corbelled lintel led into the vaulted main room. The room was heated by an open fireplace, located in the antechamber, traces of which can still be seen as a small recess in the wall. This fireplace was originally larger but was reduced in size by later masonry work.

Beneath the Dürnitz are two cellar rooms with barrel vaults, which once served as storage areas and are still accessible from the courtyard via a staircase today. The room also served several times as a film set, including in 2015 for the film “König Laurin”.