Whence it's extraordinarily far, I see, to central Spain (6)
I believe the answer is:
africa
'central spain' is the definition.
The definition and answer can be both locations as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'whence it's extraordinarily far i see' is the wordplay.
'whence' becomes 'a' (I can't explain this - if you can you should believe this answer much more).
'it's extraordinarily' indicates anagramming the letters (I've seen this in other clues).
'see' becomes 'C' (the word for the letter, according to Chambers).
'far'+'i'+'c'='faric'
'faric' with letters rearranged gives 'frica'.
'a'+'frica'='AFRICA'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for africa that I've seen before include "Continent for 21 Down" , "RAF and CIA strangely together on the continent" , "Place" , "Out of -, novel by Karen Blixen (filmed)" , "The dark continent" .)