The Landhaus' ceremonial room or Great Blazon Hall, was decorated by Joseph Fromiller in the 18C. This master of Baroque painting produced the fine ceiling fresco showing members of the States of Carinthia paying homage to Emperor Karl VI (1728), framed by trompe l'oeil galleries. He also painted most of the 665 coats of arms, covering the walls and window embrasures that belonged to the powerful men sitting in the Regional Parliament from 1591 to 1848.