The Phlegraean Fields represent the volcanic region to the west of Naples, bounded by the hill of Posillipo, Nisida, Miseno and Cuma, to understand the territories of PozzuoliBacoliMonte di Procida and Quarto, which overlook the islands of Ischia and Procida and embrace the islets of Vivara and Nisida.

A unique land in the world for its exceptional archaeological-historical heritage, for the extraordinary nature of geological and hydrological phenomena, for its landscape and naturalistic values.