Carnuntum (Καρνους in Ptolemy) was a Roman army camp on the Danube in the Noricum province and after the 1st century the capital of the Upper Pannonia province. Its remains are situated in Lower Austria halfway between Vienna and Bratislava on the "Archaeological Park Carnuntum", extending over the area of 10 km² near today's villages Petronell-Carnuntum and Bad Deutsch-Altenburg.