County site here with relics abandoned (14)
I believe the answer is:
leicestershire
'county' is the definition.
(I know that Leicestershire is a county)
'site here with relics abandoned' is the wordplay.
'with' says to put letters next to each other.
'abandoned' is an anagram indicator (the original order is abandoned).
'site'+'here'='sitehere'
'sitehere' after 'relics' is 'relicssitehere'.
'relicssitehere' anagrammed gives 'LEICESTERSHIRE'.
(Other definitions for leicestershire that I've seen before include "English county" , "somewhere in the Midlands" , "Source of cheese" , "Melton Mowbray county" , "Cricket team" .)