sentences:  The municipality includes the cadastral communes of Kading, Karnburg, Möderndorf, Possau and St. Michael am Zollfeld.The Zollfeld valley has been a cultural and political centre since Celtic tribes settled in the region.When their kingdom of Noricum had become a province of the Roman Empire in 15 BC, Emperor Claudius had the city of Virunum erected as the province's capital at the foot of the nearby Magdalensberg, where on the hill top a splendid Celtic settlement had already existed.