Claudium Virunum was a Roman city in the province of Noricum, on today's Zollfeld in the Austrian State of Carinthia. Virunum may also have been the name of the older Celtic-Roman settlement on the hilltop of Magdalensberg nearby.
Virunum is today a titular see of the Roman Catholic Church.
Wikipedia https://en.wikipedia.org/wiki/Virunum
Address 9063, Austria
Coordinates 46°41'52.304" N 14°22'1.717" E