Catacombe di San Gennaro

The Catacombs of San Gennaro are the largest paleochristian cemetery in southern Italy, a two-storey city of the dead hollowed from golden tuff beneath the Capodimonte hill. Here Naples buried its bishops, painted its first Christian images, and kept the relics of its patron saint for five centuries.

Why it matters

The site began, as so many Roman cemeteries did, with a private tomb: an aristocratic family plot of the second century AD that was later made over to the Christian community of Naples. Expansion followed in the fourth century, when the remains of Sant'Agrippino, the city's first patron, were laid in an underground basilica cut from the tuff — a single nave with a bishop's chair carved from living rock and an altar built so the faithful could reach through and touch the tomb. A third-century burial zone above grew into the upper catacomb, its walls carrying some of the earliest Christian painting in southern Italy, executed in a style that still echoes Pompeii.

From the fifth century the complex bore the name it keeps today. Bishop John I brought the remains of San Gennaro, beheaded at Pozzuoli in 305, from the Campanian hinterland to Naples and buried them here, and the catacombs became the city's great pilgrimage sanctuary. The saint's bones stayed for five hundred years before Lombard prince Sicone I carried them off to Benevento in 831; after centuries at Montevergine they returned to Naples in 1497 and now rest in the Duomo, but the underground basilica built to receive them — the basilica adjecta, with its three naves — remains the emotional centre of the visit.

What to notice

These galleries contradict the image of catacombs as cramped tunnels. The Neapolitan tuff, a volcanic deposit that cuts easily yet holds its shape, allowed diggers to open broad, luminous chambers on two levels that do not overlap — an arrangement the operators contrast with the tighter Roman examples. In the lower catacomb, built around the basilica of Sant'Agrippino on a grid plan, the lower vestibule reaches ceilings six metres high and holds a large baptismal font commissioned by Bishop Paul II, who took refuge here during the eighth-century iconoclast controversies; mass is still celebrated at that font.

Above, the Crypt of the Bishops preserves fifth-century mosaics, among them the portrait of Quodvultdeus, the Carthaginian bishop exiled alongside San Gaudioso. Two frescoes of women — Bitalia and Cerula, of the fifth and sixth centuries — show female figures holding gospel codices, and were among the first works saved by the site's modern restoration campaign. The family tomb fresco of Theotecnus, with its three overlapping layers of plaster, records a practice of repainting a burial image at each death. Around three thousand burials have been counted so far, and excavation is not complete.

Context and history

After the relics left in 831, the catacombs declined into farms, storerooms and ossuaries, and the upper galleries were used for burials as late as the Byzantine period, which is why the art on the walls spans seven centuries, from pagan second-century decoration to tenth-century Byzantine painting. Modern rediscovery came slowly through the twentieth century, and the site's present life began with the social cooperative La Paranza, which has managed the catacombs since 2006 within the Catacombe di Napoli network and made them the anchor of the Rione Sanità's revival. A 2009 lighting project, installed by a cooperative of local young people, replaced hot lamps with LED units that protect the frescoes, while sensors track humidity and radon; the same generation of Sanità residents now guides visitors through galleries their grandparents used as wartime shelter.