Heidentor in Petronell-Carnuntum Next to the Archaeology Park Carnuntum visitors find the ruins of a former Roman triumphal arch, generally known as Heidentor.

The #Heidentor in Petronell-Carnuntum forms the probably most known building from the #RomanEmpire on the grounds of today's #Austria. Historians think the structure next to the #Archaeology Park #Carnuntum was a triumphal monument. #UNESCO #RomanLimes