The Feast of San Gennaro, originally a one-day religious commemoration, arrived in the United States in September 1926 when immigrants from Naples congregated along Mulberry Street in the Little Italy section of Manhattan in New York City, to continue the tradition they had followed in Italy to celebrate Saint Januarius, the Patron Saint of Naples. His feast day is September 19 in the liturgical calendar of the Roman Catholic Church.
The immigrant families on Mulberry Street who started the feast, a group of cafe owners, erected a small chapel in the street to house the image of their patron Saint. They invited all to partake of their wares, asking the devoted to pin an offering to the ribbon streamers that are hung from the statue's apron. This money was then distributed to the needy poor of the neighborhood. Over time, the festival expanded into an 11-day street fair organized and run by people outside the neighborhood. It is now an annual celebration of food and drink, and a major tourist attraction.
Centered on Mulberry Street, which is closed to traffic for the occasion, the festival generally features sausages, zeppole, street vendors, games, parades and other such attractions. The Grand Procession is held starting at 2 p.m. on the last Saturday of the feast, immediately after a celebratory Mass at the Church of the Most Precious Blood. This is a Roman Catholic candlelit procession in which the statue of San Gennaro is carried from its permanent home in the Most Precious Blood Church through the streets of Little Italy.