Misguided tour around a tourist centre in Cornwall (5)
I believe the answer is:
truro
'in cornwall' is the definition.
(I've seen this before)
'misguided tour around a tourist centre' is the wordplay.
'misguided' indicates an anagram (I've seen this in other clues).
'around' indicates putting letters inside.
'centre' indicates the central letters.
The central letter of 'tourist' is 'r'.
'tour' anagrammed gives 'truo'.
'truo' enclosing 'r' is 'TRURO'.
(Other definitions for truro that I've seen before include "Cornish market town" , "Southwest city" , "See" , "Cape Cod town: county town of Cornwall" , "One slain by Cain" .)