Even then, and working in famous temple (9)
I believe the answer is:
parthenon
'famous temple' is the definition.
'parthenon' can be an answer for 'temple' (Parthenon is an example). I am not sure about the 'famous' bit.
'even then and working' is the wordplay.
'even' becomes 'par' (I've seen this in other clues).
'and' says to put letters next to each other.
'working' becomes 'on' (e.g. a machine is working or on).
'par'+'then'+'on'='PARTHENON'
'in' is the link.
Can you help me to learn more?
(Other definitions for parthenon that I've seen before include "Ancient temple" , "Temple of Athene on Acropolis in Athens" , "Tourist attraction of Athens" , "Temple on the Athenian Acropolis" , "ruined Greek temple" .)