Imaginary perfect place (6)
I believe the answer is:
utopia
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">imaginary perfect place</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 utopia that I've seen before include "Perfect state of things" , "Imaginary place where everything is perfect" , "Place of perfect happiness" , "Impracticable state of perfection" , "Sir Thomas More's perfect country" .)