The Duomo, symbol of Milan in the world, is one of the largest cathedrals in Italy and Europe. Patrimony of Milanese people and humanity, over the centuries it has been expressing, with its magnificence, the devotion of humanity toward the Divine, involving future generations in an endless commitment. The Milan Cathedral, besides being an artistic monument, is a privileged place of prayer, deeply linked to the memory and teachings of the Bishops who succeeded on St. Ambrose's chair, and to the history of the millions of worshippers who, every year, gather in this place to celebrate the Sacred Mysteries. The Cathedral is the mother Church of the Diocese, having a symbolic role of exemplarity both in the life of the city worship, and in relation with the Diocese activity.