Australia's "City of Light" (5)
I believe the answer is:
perth
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">australia's city of light</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 perth that I've seen before include "Period (of effort)" , "Town at the head of the Tay estuary" , "Scottish/Australian city" , "City of Scotland" , "Home of fair maid" .)