The Catacombs of San Gennaro are an early-Christian burial complex beneath the Rione Sanita, managed by the youth cooperative La Paranza. Guided visits reveal frescoed tombs and the resting place of Naples’ patron saint, while the ticket income funds jobs, training and community projects in one of the city’s most disadvantaged districts. Visiting is both a remarkable historical experience and direct support for a celebrated social-regeneration initiative.