Museo del Tesoro della Cattedrale di San Lorenzo

The Museo del Tesoro della Cattedrale di San Lorenzo is the treasury museum of Genoa Cathedral, entered from Piazza San Lorenzo in the Centro Storico. It holds the liturgical objects, relics and gifts accumulated by the cathedral and the Genoese Republic from the Middle Ages through the Baroque period, and is housed in a purpose-built underground space created in the 1950s by the architect Franco Albini, whose austere design is itself recognised as a landmark of modern museum architecture. The collection's best-known object is the Sacro Catino, a green hexagonal vessel that the Genoese took from Caesarea during the First Crusade in 1101 and long believed to be an emerald and the Holy Grail; it was later shown to be glass. The vessel was taken to Paris by Napoleonic forces and returned damaged in 1816. Other major pieces include the reliquary chest of Saint John the Baptist, the Cross of the Zaccaria, a Byzantine-style cross associated with the relics of the True Cross, and medieval and Renaissance silverwork, enamels, jewelled processional items and vestments. The relics and offerings reflect the Republic's wealth from Mediterranean trade and its devotion to the patron saints of the city. The exhibits are arranged in a sequence of circular and rectangular rooms in dim lighting, with each object set apart in a way that focuses attention on its material and craft rather than a strict chronological narrative. The treasury was restored and updated after the original installation, and the preservation of fragile metalwork and textiles is monitored under controlled conditions. The museum is small and can be visited in less than an hour, which makes it easy to combine with the cathedral and Palazzo Ducale. For visitors interested in the religious and political symbolism of Genoese objects, it shows how relics and treasure served as civic as well as devotional assets.