Certified by historical monuments, ALLEGRI did an apprenticeship in sculpture with Michel Roetzer.
In 1998, after taking on jobs as stone cutter for different companies, he devoted himself entirely to sculpture.
Among the major restoration sites he has worked on: Cathedrals of Sens, Nevers, and Amiens, Palace of the Dukes and States General of Burgundy, the Louvre and Tuileries Gardens.