February 2011 - February 2012
Conservation work was carried out on the pietraforte stone wall surface, the pietra serena stone cornices of the tympanum and the windows, the rose window, and the Medici insignia.
After preventive pre-consolidation and cleaning operations, a structural consolidation of the portions that were detaching was carried out. Missing parts were reconstructed so as to give the monument a sense of unity, cracks stuccoed, and a final protective treatment was applied. The projecting parts were protected with a lead net.