Cool Paris fashion that may be seen in Athens (9)
I believe the answer is:
acropolis
'seen in athens' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'cool paris fashion' is the wordplay.
'fashion' is an anagram indicator.
'cool'+'paris'='coolparis'
'coolparis' anagrammed gives 'ACROPOLIS'.
'that may be' acts as a link.
Can you help me to learn more?
(Other definitions for acropolis that I've seen before include "Upper fortified part of Greek city - Athens's is famous" , "Parthenon location" , "high point" , "old citadel" , "Greek tourist spot" .)