Venues of spectacles, say (5)
I believe the answer is:
sites
'venues' is the definition.
(I've seen this in another clue)
'spectacles say' is the wordplay.
'spectacles' becomes 'sights' (a spectacle is an amazing sight).
'say' indicates a 'sounds like' (homophone) clue.
'sights' is a homophone of 'SITES'.
'of' acts as a link.
(Other definitions for sites that I've seen before include "places" , "Is set among building locations" , "Is set (anag)" , "Spots" , "Locates" .)