Itinerary:

The Duomo is a 13th-century Gothic cathedral dedicated to San Gennaro, Naples' patron saint. Inside, the Chapel of the Treasure of San Gennaro has Baroque frescoes and other artworks.
The church of San Lorenzo Maggiore, near via San Gregorio Armeno, is one of the most fascinating churches in Naples and its history is complex.
San Severo Chapel and the Veiled Christ statue by Sammartino (just in case of not too long line).
In piazza del Gesú, there is the breathtaking church of Gesu' Nuovo which is an exquisite example of the Baroque
Via San Gregorio Armeno known as the street of Nativity workshops
a walk along the street known as Spaccanapoli (because it splits the old center of Naples in half.)
The Monumental Complex of St. Chiara, including the Church, the Monastery and the Convent
Piazza San Domenico Maggiore, with the famous Scaturchio, one of the best pastry shops of Naples.
Panoramic view
Panoramic view
Panoramic view
Panoramic view
Lunch time (own expense), we will suggest one of the best pizzeria along via Partenope (Lungomare di Napoli) with the panoramic views of Castel dell Ovo and volcano Vesuvius. UNESCO declared the Neapolitan art of pizza spinning, on December 2017, "intangible cultural heritage" adding it to the Representative List of the Intangible Cultural Heritage of Humanity.
Best views over the gulf of Naples from the hill of Posillipo by car
On the way, on Panoramic Coast area, Limoncello Tasting in a real Limoncello Factory!