that measures the equation of time, the bars of a chapel door that resonate like a xylophone, a mysterious phallic symbol in San Gennaro catacombs, a little-known museum with a section dedicated to Punch, a unique anatomical model dating from the 18th century, a raft ride 20 metres below Piazza del Plebiscito.

Far from the crowds and the usual clichés, Naples holds many well-hidden treasures that are revealed only to local residents and travellers who know where to step off the beaten track.