From the Church of the New Jesus, to St. Clare's Monastery wherever you set foot, it will be a great surprise. Spaccanapoli is the road from the Spanish Quarters to the forcella district.
The entrance to Naples underground is in Piazza San Gaetano 68 (on the way to the Courts).
Excursions are in Italian and English. For other languages, or for groups or excursions outside of opening hours only on reservation.