Naples, with layers of empires past – Greek, Roman, Norman, Spanish – each leaving an imprint...did you know its underground holds a secret waiting to be discovered? Beneath the bustling streets lies a vast network of tunnels and chambers, carved out of the soft tufa stone. This Naples Underground has served many purposes over the centuries, from ancient aqueducts to World War II bomb shelters. If you have the chance to explore these subterranean passages, it's like stepping into a time machine, with each turn revealing another layer of the city's past. It's an experience not to be missed if you want to uncover the hidden depths of Naples' history.