For many reasons, Vomero could be considered almost as a separate citadel that watches over Naples. The castle that dominates the top of this hill seems in fact separated from the rest of the city by a large green area.

Its history is also different from that of the more central districts, since the Vomero district is much more recent. In fact, the hill was edified only starting from the late 1800s and the beautiful buildings, together with the pure air, at the time made it one of the noble families' favorite areas.