See
Napoli Sotteranea
Shows former stone quarries, used the city buildings, transformed later to water distribution network, garbage disposal pits and finally a war shelter. You will visit several larger and smaller areas connected by narrow paths - beware if you are claustrophobic! In addition, the tour shows remains of the nearby Greco-Roman theatre, where Nero (supposedly) made his artistic debut.
Listing from Wikivoyage: Naples, CC BY-SA 4.0.
Updated 28 Sept 2026. Something wrong? Tell us.