"Naples Cathedral (Duomo di Napoli) or or the Cathedral of the Assumption of Mary"

The architectural style of the cathedral is Angevin gothic style (Italian: gotico angioino). There are archaeological remains in the crypt of the neighboring original palaeochristian church of Santa Restituta where there is a Greek wall belonging to the temple of Apollo. Under the apse the peristyle of a late imperial domus can be seen; also a stretch of Roman aqueduct after the foundation of the city and a stretch of Greek road on an inclined plane.

Inside the cathedral is the Royal Chapel of the Treasure of San Gennaro, with frescoes by many Italian and French masters of the 14thCentury.

The church houses a vial of the blood of Saint Januarius, which is brought out three times a year, on the first Saturday in May, on 19 September and 16 December, when the dried blood usually liquefies. If the blood fails to liquefy, then legend has it that disaster will befall Naples.