Parthenon site (9)
I believe the answer is:
acropolis
'parthenon site' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for acropolis that I've seen before include "Large old building" , "high point" , "Upper fortified part of Greek city - Athens's is famous" , "Athens landmark" , "old citadel" .)