Ancient arts venue (5)
I believe the answer is:
odeon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ancient arts venue</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for odeon that I've seen before include "Performances here no longer" , "Place for cinema or musical and dramatic performances" , "Greek music hall" , "dramas here" , "Ancient theatre - modern cinema" .)