Artist captures Germany's capital, it is very attractive (6)
I believe the answer is:
magnet
'it is very attractive' is the definition.
(magnets are attractive)
'artist captures germany's capital' is the wordplay.
'artist' becomes 'manet' (I've seen this before).
'captures' indicates putting letters inside.
'capital' indicates taking the first letters.
The initial letter of 'germanys' is 'g'.
'manet' placed around 'g' is 'MAGNET'.
(Other definitions for magnet that I've seen before include "Attractive body" , "Centre of attraction" , "Source of attraction" , "what's attractive" , "Attractive type" .)