The entrance hall in the base of the damaged spire was reopened to visitors, having been consecrated on 7 January 1987. Its floor contains a mosaic of the Archangel Michael fighting the dragon. The vault shows a procession of Hohenzollern princes, early and more recent. Other mosaics show important monarchs in medieval Germany, Reformation thinkers and Reformation princes. Bas-relief sculptures illustrate scenes from biblical stories, scenes from the life of Kaiser Wilhelm I and symbolic figures representing war and peace