The tour starts at San Domenico church, where the relics of Saint Catherine of Siena are kept.We continue on the main road Banchi di Sopra, the former Via Francigena, pilgrimage road leading to Rome, one of the main destinations for a Christian pilgrim.The following stop is the main square, Piazza del Campo, the natural centre of the city. Its shell-shaped heart made of bricks is like a warm carpet of burnt Siena color.From here we walk to the top of the hill where the majestic Cathedral stands, unfolding its exceptional works of art, among which we find masterpieces of Michelangelo and Donatello.