The project included preserving the torso of the castle masonry, straightening of the stability of the three supporting pillars and restoring of the rare Romanesque windows. All of the stone masonry conservation works were carried out with high sensitivity. In case of necessity to reconstruct the heavily damaged parts this heavily damaged areas were drawn and the original mortar pointing of the entire area was strictly observed when the stones were re-installed in the masonry.
Due to the extraordinary value of the three Romanesque composite windows on the north side of the palace and the two-light window on the east side, the restoration and conservation work was carried out with maximum sensitivity using only reversible materials. The Romanesque windows are made of crystalline marble from a nearby quarry in Wundsiedel, the two-part window is combined.