1,740 feet of tunnels snake underground in central Naples transformed into a tourist attraction in 2000s.
In cities as old as Naples, residents have become used to unearthing classical Roman treasures, antiquated cisterns and other historic artefacts underneath their homes when it comes time to renovate.
Layered with history, the ancient city is also home to a mysterious warren of tunnels carved into 16th century aqueducts, 100 feet below ground.
And what makes these tunnels all the more intriguing is that they are littered with discarded motorbikes, rusting vintage cars and water tanks in the 1950s and are then long forgotten.
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Inside visitors can find the rusting relics of vintage cars.
Impounded retro motorbikes languishing 100 feet below ground in the 16th century aqueducts.
The intriguing Bourbon tunnel was originally designed for King Ferdinand II of Bourbon as an escape route connecting the royal palace and the army barracks in 1853
The secretive passageways were designed in response to the spate of revolts the monarch faced during his volatile reign
The king died before the tunnels were completed but they served a number of purposes until the 1960s when they fell into disuse and were forgotten
The passageways and aqueducts offered refuge as a military hospital and bomb shelter during World War II
Snaking 1,740 feet along the city, the structure was built into the volcanic rocks of the Bolla and Carmignano aqueducts
The tunnels became a warehouse for impounded vehicles from the 1940s until the 1960s
Visitors crawling through the tunnels nowadays will be sure to encounter the dusty relics of vintage cars and retro motorcycles abandoned underground
Rows of discarded vespas line the passageways – a treasure trove of historic wonders
In the early 2000s locals re-discovered and transformed the passageways into a quirky tourist attraction – Galleria Borbonica
Galleria Borbonica devised three different types of tours to satiate the curiosity of locals and tourists alike
On a standard tour, you can walk inside the tunnel, see the bomb shelters and water tanks
This incredible image shows an exquisite picture on one of the rusting vehicles
The speleo tour allows visitors to enjoy a hands-on gritty experience crawling through the tunnels wearing helmets with torches
Layered with history, as mesmerising as Naples is above ground the ancient city is also home to a mysterious warren of tunnels. This image shows the grand scale of the underground city
Tourists can take a raft ride through one of the flooded tunnels, with guides lighting the way with lanterns
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Source: dailymail.co.uk, bbc.com