Peculiar city hall -- everybody's gone (6)
I believe the answer is:
parish
'peculiar city hall everybody's gone' is the definition.
I can't judge whether this definition defines the answer.
'city hall everybody's gone' is the wordplay.
'city' becomes 'paris' (Paris is an example).
'everybody' becomes 'all' (I've seen this before).
'gone' indicates named letters should be taken away.
'hall' with 'all' removed is 'h'.
'paris'+'h'='PARISH'
Can you help me to learn more?
(Other definitions for parish that I've seen before include "Ecclesiastical district" , "Unit of local government" , "area known to clergyman" , "Local government area" , "Area within diocese with own church" .)