Every year, along the streets of the city, the finest exaples of Aosta Valley craftworks is set out on display. During the Middles Ages, the fair took place in that area of the ancient rown of Aosta around the collegiate Church know as Sant'Orso. According to the legend, it all began in front of the church itself, where Sant'Orso, who probably lived before the 9th century, used to stand distributing clothing and "sabots", traditional wooden shoes which can still be seen at the fair, to the poor. Now the event covers the whole city center, as well as the area around the Roman city wall. The fair is also an occasion for listening to traditional alpine music, watching folk dances, and tasting the wine and food that is traditional to the area.

It is a moment festivity which continues on, with traditional singing and dancing, thourght the night long "Veillà", between the 30 and 31 January, with the streets illuminated and filled with people