A charge to see tropical paradise (5)
I believe the answer is:
atoll
'tropical paradise' is the definition.
(I've seen this before)
'a charge' is the wordplay.
'charge' becomes 'toll' (toll is a kind of charge).
'a'+'toll'='ATOLL'
'to see' is the link.
(Other definitions for atoll that I've seen before include "Coral isle" , "Ring of coral" , "tropical island" , "Key" , "Circular coral reef" .)