The Cathedral, the home of San Gennaro. To understand the visceral bond between the Neapolitans and their holy protector the ideal would be to witness the "miracle of San Gennaro", the liquefaction of the blood of the Saint kept inside an ampoule. The event, to which the Neapolitans have always attributed the meaning of benaugural, is repeated three times a year: the first Sunday of May, 19 September and finally 16 December.