Conceived of by Ferdinand II in 1853 as an escape route from the Royal Palace that was never completed, the Bourbon Tunnel is part of the Carmignano Aqueduct system. Built in the early 17th century, the aqueduct supplied water to the Monte di Dio district until 1866. During WWII, this cavernous structure served as an air raid shelter and military hospital, providing aid and protection to some 10,000 Neapolitans. After the war, the tunnel was used an impound lot until the 1970s.

The Bourbon Tunnel was opened to the public in October 2010 after five years of cleaning and restoration work by the Associazione Culturale Borbonica Sotteranea. Visits to the Bourbon Tunnel are by guided tour only.

Guided Tours of the Bourbon Tunnel

Standard Tour

Where: the tour starts at both entrances, Via Morelli, 40 (inside Morelli car parking) and Vico del Grottone, 4. Tours starting at Vico del Grottone will descend approximately 30 meters via an 18th century staircase.
When: Friday through Sunday and Holidays at 10:00 – 12:00 – 15:30 – 17:30
Duration: Approximately 1 hour and 15 minutes
How Much: €10,00
Reservations are not required

Adventure Tour

This tour takes visitors by raft through the waters of the lowest part of the aqueduct. Children under 10 not allowed.
Where: Via Morelli, 40 (inside Morelli car parking)
When: Saturday and Sunday at 10:00 – 12:00 – 15:30 – 17:30
Duration: Approximately 1 hour and 20 minutes
Reservations Required

Speleo Tour

For more adventurous visitors and caving enthusiasts, with their own own lighted helmet, overalls and gloves, visitors will crawl along the ground through aqueduct tunnels to reach the most beautiful cisterns still full of water. Then, with a personal harness, visitors can fly upon a cistern via a zip-line. Children under 18 are not allowed and the tour is not recommended for claustrophobic people, persons with motor disabilities, or anyone weighing over 100 kg.

Where: Vico del Grottone, 4
When: Saturday and Sunday at 1100- 1600
Duration: Approximately 2 hours and 30 minutes
Reservations Required

Bookings for all tours can be made online or to +393662484151 – 0817645808 or

Read more in the Guide!!!

Plan Your Visit

Visit Website

Vico Del Grottone, 4, Naples

+39 081 7645808 or 366 2484151

By guided tour only Friday – Sunday at 1000, 1200, 1530, and 1730


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