The Hartberger Karner charnel house is among Austria’s most significant Romanesque buildings. Capitals framing the entrance reveal a Gothic influence. It was constructed as a Romanesque double rotunda. There is a circumferential dentil and round-arched frieze under the eaves of the cone-type roofs. The vertical structure of the main building is of a gracious beauty with nine compound pillars, each of which was originally crowned by grotesque heads. This is only the case with the two front capitals on both sides of the entrance today. According to common belief, they are intended to ward off evil spirits.