At Piazza San Gaetano, there is the entrance to “Underground Naples”, the most famous (not the only) route of the Naples subsoil. A guided tour in the bowels of the city to discover the Greek influences, the Roman ones and, above all, to relive the tragic days of the Second World War, when about 40,000 Neapolitans took refuge underground to escape the allied bombings and German reprisal.
The entrance to Naples underground is in Piazza San Gaetano 68 (on Via dei Tribunali).
The excursions are in Italian and English. For other languages, or for groups or excursions outside the opening hours by reservation only.