Glamorous retreat that brings the past to life (9)
I believe the answer is:
flashback
'that brings the past to life' is the definition.
(a flashback is a scene set in the past)
'glamorous retreat' is the wordplay.
'glamorous' becomes 'flash'.
'retreat' becomes 'back' (to retreat is to go back).
'flash'+'back'='FLASHBACK'
(Other definitions for flashback that I've seen before include "Echo of the past" , "Unexpected but vivid recurrence of a past experience" , "(Transition to) earlier scene" , "Film scene from an earlier time" , "Past scene re-enacted" .)