Places to go that are wildly insular (7)
I believe the answer is:
urinals
'places to go' is the definition.
(places to urinate or 'go')
'are wildly insular' is the wordplay.
'are wildly' indicates anagramming the letters.
'insular' anagrammed gives 'URINALS'.
'that' acts as a link.
(Other definitions for urinals that I've seen before include "Plumbing fixtures in the gents" , "Plumbing fixtures for men only" , "They're taking the piss" .)