The 18th century Pósa House (Pósa ház), Rococo garret-roofed house, the most precious building of Óváros tér, was the former residence of the Cistercian Order of Zirc.
The coats of arms on the frontispiece refer to the owners: the white crane symbolising vigilance is the coat of arms of the Abbey of Zirc, the other is the coat of arms of the Cistercian Abbey of Heinrichau in Silesia.