Fellow overlooking the Spanish place of worship (6)
I believe the answer is:
chapel
'place of worship' is the definition.
(chapel is a kind of place of worship)
'fellow overlooking the spanish' is the wordplay.
'fellow' becomes 'chap' ('chap' can be a synonym of 'fellow'**).
'overlooking' says to put letters next to each other (down clues only).
'the spanish' becomes 'el'.
'chap'+'el'='CHAPEL'
(Other definitions for chapel that I've seen before include "Part of or alternative to church" , "Local printers" , "Small building for worship" , "house of prayer" , "Place used for Christian worship - smaller than cathedral" .)