Columbia subject headings:
Harvard subject headings:
Austria--Antiquities.
Carnuntum (Extinct city)
Monuments--Austria--Carnuntum (Extinct city)
Triumphal arches--Austria--Carnuntum (Extinct city)
Princeton subject headings:
Austria--Antiquities.
Carnuntum (Extinct city)
Excavations (Archaeology)--Austria--Carnuntum (Extinct city).
Monuments--Austria--Carnuntum (Extinct city).
Romans--Austria--Carnuntum (Extinct city).
Triumphal arches--Austria--Carnuntum (Extinct city)--Sources.
Triumphal arches--Austria--Carnuntum (Extinct city).