This killing was the beginning of the civil florentine war between the aristocratic families factions of the city: Guelphs against ghibellines.
Located along the Arno River, Pisa boasts a rich history and a glorious past as a maritime republic.
The Dante funeral mask, once thought real, is now believed a lost sculptural portrait. Donated to Florence in 1911, found in Ravenna in 1830.
In 1632 the scientist published his "Discorso sui massimi sistemi" and he risked to be burnt at the stake