Da Vinci's Mona Lisa studio may have been found

Researchers studying fading frescoes in a Florence convent building have found what may have been the workshop where Leonardo da Vinci painted the Mona Lisa.

The rooms, on the upper floors of a building shared by Florence’s Institute of Military Geography and the Santissima Annunziata Monastery, contain frescoes of birds in flight that could be attributable to Leonardo’s school, Alessandro Vezzosi, director of a Leonardo museum near Florence, said today.