Capital city of Piedmont (5)
I believe the answer is:
turin
'capital city of piedmont' is the definition.
(I know that Piedmont capital Turin)
This is all the clue.
(Other definitions for turin that I've seen before include "Industrial city of Piedmont" , "Italian city with sacred Christian Shroud" , "First capital in 1861 of united Italy" , "Italian destination" , "City of north Italy" .)