Unbroken view, or restricted by wide-brimmed hat? (8)
I believe the answer is:
panorama
'unbroken view' is the definition.
(I've seen this before)
'or restricted by wide-brimmed hat?' is the wordplay.
'restricted by' means one lot of letters goes inside another (I've seen this in other clues).
'wide-brimmed hat?' becomes 'panama' (I've seen this before).
'or' going inside 'panama' is 'PANORAMA'.
(Other definitions for panorama that I've seen before include "Wide view of region" , "Wide vista" , "Wide view (from BBC TV?)" , "Current affairs programme" , "Overall view" .)