For art aficionados and religious pilgrims should visit the famous Duomo Naples, or the cathedral. This church is the chief religious house of Neapolitans. The church was built in honor of their patron Saint Gennaro (St. Januarius). Other than that, it is believed that the church houses a small container that has the blood of the saint. This religious building is home to rare art collection of famous Italian visual artists and some French painters.