On one side of the facade, the bell tower joins the atrium of the Cathedral to the thirteenth-century building that once housed the Opera del Duomo, the cathedral works commission.
From the top of the bell tower you can enjoy a splendid view of the city and the hills towards south, Mount Pisano. On the south side of the church, in the Museum of the Cathedral of Lucca the furnishings from the early Middle Ages for the performance of solemn liturgical functions in the Cathedral are collected, including silk vestments and chasubles, embellished with decorative floral and geometric embroidery. A remarkable testimony of Lucca's high quality textile activities at that time.
The splendid treasures of the Volto Santo, the sacred cross of Lucca, are kept in a dedicated room. The ornaments, still used today on May 3 and September 14 to "dress" the venerated simulacrum, include the fourteenth-century frieze of the robe, the sumptuous crown in gold and precious stones and the mid-seventeenth-century collar with a creative jewel embellished with diamonds and enamels referable to the French goldsmith Gilles Légaré who worked at the court of the Sun King.
On the north side of the Cathedral there is Piazza Antelminelli with a neoclassical fountain designed by Lorenzo Nottolini, the arrival point of the monumental aqueduct coming from Mount Pisano, Palazzo and Giardino Bernardi, now Micheletti, built in the second half of the sixteenth century on a design by Ammannati. On the square, every third Sunday of the month (and the previous Saturday) is held one of the largest antique markets in Tuscany where you can browse through souvenirs and vintage objects of all kinds.