Part of the head’s place of worship (6)
I believe the answer is:
temple
This clue is a double definition.
'part of the head's' is the first definition.
('temple' is part of 'head')
'place of worship' is the second definition.
(temple is a kind of place of worship)
(Other definitions for temple that I've seen before include "something close to cheek" , "Side of the head or religious building" , "London tube station" , "child actress ..." , "Area on either side of the forehead" .)