In Cornwall, a novel tour around the centre of tourism (5)
I believe the answer is:
truro
'in cornwall' is the definition.
(I've seen this before)
'a novel tour around the centre of tourism' is the wordplay.
'a novel' indicates an anagram (letters in a new or novel order).
'around' indicates putting letters inside.
'the centre of' indicates the central letters.
The middle of 'tourism' is 'r'.
'tour' anagrammed gives 'truo'.
'truo' going around 'r' is 'TRURO'.
(Other definitions for truro that I've seen before include "Cornish county town" , "Southwest city" , "See" , "English city" , "Cornish cathedral city" .)