Home of the "Mona Lisa" (6)
I believe the answer is:
louvre
'home of the mona lisa' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for louvre that I've seen before include "European museum" , "Famous Paris national gallery of art" , "Great art museum-gallery in Paris" , "Great art gallery in Paris" , "Art exhibition" .)