Alessandro Perrella starts a journey into Piero della Francesca’s work, which is inserted in the environmental reality of Monterchi, privileged door of the Valtiberina, in the wonderful region of Tuscany. A significant contribution to the knowledge of the extraordinary events occurred in this painting, but also the proposal to enter into the complex theological, philosophical, scientific and mathematical thought of the supreme artist that still amazes us for the richness of content and absolute perfection of form.