Unusual place is ... unusual (7)
I believe the answer is:
special
'unusual' is the definition.
(thesaurus)
'unusual place is' is the wordplay.
'unusual' indicates anagramming the letters.
'place'+'is'='placeis'
'placeis' is an anagram of 'SPECIAL'.
(Other definitions for special that I've seen before include "Dish not on main menu" , "Particular, peculiar" , "Out of the ordinary, singular" , "Distinguished" , "Rare, valuable" .)