The province of Arezzo is divided into four valleys, each with its own characteristics. The Valdarno, characterized by “crags” (a unique kind of geological structures) and the suggestive Pratomagno massif, is the valley closest to Florence. Moving towards Siena, we meet the Valdichiana and then Cortona, a city made known by to the novel and movie ``Under the Tuscan sun`` and rich in Etruscan archaeological finds and churches. The Casentino Valley stands out for its Foreste Casentinesi National Park, the Franciscan Sanctuary of Verna (one of the most important places of worship in Tuscany) and the Castle of the Counts Guidi of Poppi. Finally, at the border with Umbria, there is the Valtiberina, where Piero della Francesca was born and where Anghiari is located (recognized as one of the most beautiful medieval villages in Italy). At the confluence of these valleys, as an old guardian, stands the wonderful city of Arezzo, with its Etruscan origin, narrow streets and its large square surrounded by medieval buildings. Arezzo gave birth to innumerable Italian geniuses, like Giorgio Vasari, Guido Monaco, Francesco Petrarca and Francesco Redi. The Antiquarian Fair (first weekend of the month) and the Giostra del Saracino (third Saturday of June and first Sunday of September) stand out among the events of historical-cultural-artistic interest.