Understanding boundaries of Italian tourist attraction (7)
I believe the answer is:
insight
'understanding' is the definition.
(insight is a kind of understanding)
'boundaries of italian tourist attraction' is the wordplay.
'boundaries of' means to remove the middle letters.
'tourist attraction' becomes 'sight'.
'italian' with its centre removed is 'in'.
'in'+'sight'='INSIGHT'
(Other definitions for insight that I've seen before include "Clear understanding" , "Intuition" , "Perceptiveness" , "percipience" , "Visible" .)