Ancient city in Italy (7)
I believe the answer is:
pompeii
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ancient city in italy</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for pompeii that I've seen before include "Ancient site" , "City buried by Vesuvius eruption" , "Lava-buried Roman city" , "Roman site" , "Site of an Italian disaster of AD79" .)