Unusual places etc. could be something worth seeing (9)
I believe the answer is:
spectacle
'be something worth seeing' is the definition.
(I've seen this before)
'unusual places etc' is the wordplay.
'unusual' indicates an anagram.
'places'+'etc'='placesetc'
'placesetc' anagrammed gives 'SPECTACLE'.
'could' is the link.
(Other definitions for spectacle that I've seen before include "Wonder" , "sensational event" , "marvel" , "Remarkable sight" , "Striking 25 [SIGHT]" .)