Feature of Church, special, I linked with Religious Education (5)
I believe the answer is:
spire
'feature of church' is the definition.
(part of a church building)
'special i linked with religious education' is the wordplay.
'special' becomes 'sp'.
'linked with' means one lot of letters go next to another.
'religious education' becomes 'RE' (abbreviation).
'sp'+'i'+'re'='SPIRE'
(Other definitions for spire that I've seen before include "Piers (anag.)" , "one over the church?" , "Tall pointed structure as on church or in O'Connell St." , "Church feature visible from a distance" , "Church steeple" .)