Museum of the Treasure of St. Gennaro

The Museo del Tesoro di San Gennaro is a museum of religious relics located in Naples, in the Campania region of southern Italy. Opened in December 2003, it houses one of the most significant collections of sacred art and votive objects in Europe, assembled over centuries in devotion to Saint Januarius, the patron saint of Naples. The museum matters not only for the extraordinary material value of its holdings, which include goldsmith work, silver, paintings, and textiles, but also because it makes publicly accessible treasures that for centuries were preserved in the cathedral treasury and never shown to the public.

The museum opened to the public in December 2003 through a project financed by private enterprises, European funds, and local institutions, under the high patronage of President of the Republic Carlo Azeglio Ciampi. The initiative came from the Deputazione della Reale Cappella del Tesoro, a lay institution founded in 1601. Paolo Jorio initiated the project, while Francesca Ummarino served as curator. The treasure itself has a dramatic history: during the Second World War, it was taken to the Vatican for safekeeping and returned to Naples Cathedral in 1947 through the efforts of Giuseppe Navarra, nicknamed o rre di Poggioreale, who successfully delivered the precious objects intact into the hands of Archbishop Alessio Ascalesi.

The museum occupies more than seven hundred square meters and displays works that had never previously been offered to public view. The collection encompasses jewels, statues, busts, fine fabrics, and paintings of great value. A particularly significant aspect is the silver collection, comprising approximately seventy pieces spanning from 1305 to the contemporary era, which remains intact, never having been altered or stolen, and is almost entirely the work of masters of the Neapolitan school. The museum itinerary also includes visits to three sacristies of the Royal Chapel of the Treasure, recently restored, containing valuable paintings by Luca Giordano, Massimo Stanzione, Giacomo Farelli, and Aniello Falcone, which had never before been open to the public.

Among the most remarkable pieces is the mitre of Saint Januarius, created in 1713 by goldsmith Matteo Treglia, set with 3,694 precious stones: 3,328 diamonds representing the hardness of faith, 168 rubies representing the saint's blood, and 198 emeralds representing knowledge, with a total weight of 18 kg. The mitre is completed by two lappets decorated with engravings of the ampoule of Saint Januarius. The necklace of Saint Januarius was created between 1679 and 1929 through successive additions to the original jewel by goldsmith Michele Dato, with stones and jewels donated over centuries by sovereigns, popes, nobles, and common people. Notable donors include Charles III of Bourbon, Maria Amalia of Saxony, Maria Carolina of Austria, Francis I of Austria, Giuseppe Bonaparte, Maria Cristina of Savoy, Victor Emmanuel II of Savoy, and finally Maria Jose, last Queen of Italy, who gave a ring in 1929. The insignia of the Order of Saint Januarius include a brooch, plaque, and cloak encrusted with gems, enamels, precious stones, and decorations depicting the Bourbon lily, from the original regalia of the order founded in 1738 by Charles III of Bourbon. Other significant gifts include a gold chalice from 1860 donated by Francis II, the last Bourbon gift to the saint's treasure; a gold episcopal cross with emeralds and diamonds given by Umberto I and Margherita of Savoy in gratitude for surviving an assassination attempt in 1878; and a gold, coral, and malachite pyx donated by Umberto II of Savoy in 1931, commissioned from the Ascione family of Torre del Greco, official suppliers to the Royal House of Savoy.

The museum entrance is situated beside Naples Cathedral and the Royal Chapel of the Treasure of Saint Januarius. The exhibition spaces are located in rooms beneath the Royal Chapel of the Treasure, integrating the museum physically and functionally with one of the most important religious sites in Naples.

The Museo del Tesoro di San Gennaro is located in Naples, Italy, with its entrance adjacent to the Duomo and the Royal Chapel of the Treasure. The museum is owned and operated in connection with the Deputazione della Reale Cappella del Tesoro. Visitors can access information through the official website at https://www.tesorosangennaro.it/. The museum serves as a major cultural and religious destination, presenting treasures that had been hidden from public view for centuries and now function as accessible testimony to Neapolitan devotion, craftsmanship, and the historical patronage of European royalty and papal authority.