Protected structure in Pisan tower? (6,8)
I believe the answer is:
listed building
'pisan tower?' is the definition.
The definition suggests a singular noun which matches the answer.
'protected structure' is the wordplay.
I cannot quite understand how this works, but
'structure' could be 'building' (building is a kind of structure) and 'building' is found within the answer.
The remaining letters 'listed' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Another definition for listed building that I've seen is " Architectural treasure".)
