Monument of astute builder (6)
I believe the answer is:
statue
'monument' is the definition.
(I know that statue is a type of sculpture)
'astute builder' is the wordplay.
'builder' indicates anagramming the letters.
'astute' is an anagram of 'STATUE'.
'of' acts as a link.
(Other definitions for statue that I've seen before include "Use tat (anag.)" , "Figurine" , "permanent fixture" , "Sculpture of person or animal" , "Modelled figure of a human or animal" .)