Magnificent article about a Spanish city (7)
I believe the answer is:
granada
'spanish city' is the definition.
(I've seen this in another clue)
'magnificent article about a' is the wordplay.
'magnificent' becomes 'grand' (I've seen this in another clue).
'article' becomes 'a' (the indefinite article in English).
'about' indicates putting letters inside.
'grand'+'a'='granda'
'granda' enclosing 'a' is 'GRANADA'.
(Other definitions for granada that I've seen before include "City of Andalusia" , "Andalusian city" , "Andulasian city" , "City in southern Spain, site of the Alhambra" , "sunny city" .)