Bourbon Tunnel Entry Tickets & Guided Tour at Vico del Grottone

The Bourbon Tunnel guided tour takes visitors through a network of underground passages running beneath the city of Naples. The tunnel complex was originally commissioned in 1853 by King Ferdinand II of Bourbon, who ordered its construction as a secret escape route connecting the Royal Palace to the military barracks and the sea. Stretching roughly 500 metres, the route passes through aqueduct galleries, wartime air-raid shelters, and chambers that were later used as a vehicle depot by the Naples police. For anyone exploring things to do in Pompeii Naples, this underground circuit offers a layered look at the city's history from the Bourbon monarchy through to the Second World War.

On the tour, a guide leads the group through the main tunnel corridor, pointing out the original cisterns carved into the tuff rock, wartime artefacts, and the collection of vintage motorcycles and cars left in the depot. The route is well lit and accessible on foot, though some sections are narrow. Entry tickets cover the guided walk, access to all open chambers, and use of any provided equipment such as helmets or torches where required. Tours run at scheduled times throughout the day, and booking in advance is recommended to secure a place on your preferred slot.