Are there tunnels under Downing Street?

Is there a 10 Downing Street secret tunnel? It is a well-known fact that there is a tunnel that links number 10 Downing Street with number 12, running under number 11. But beyond that, there is no official confirmation of any tunnels under Downing Street itself.



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Beneath London's streets, there's a whole network of tunnels used for the Tube, sewage and water. Out of sight and out of mind, many of the people that walk the streets above them don't know about these hidden gems, as the hustle and bustle of city life continues.

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The most important military citadel in central London is Pindar, or the Defence Crisis Management Centre. The bunker is deep beneath the Ministry of Defence on Whitehall. Construction took ten years and cost £126.3 million. Pindar became operational in 1992, two years before construction was complete.

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The cities of Özkonak, Derinkuyu, and Kaymakli in Cappadocia, Turkey, are some of the most complete (and most underground) of our underground cities. Denrikuyu is estimated to have once been capable of housing 20,000 people, and actually connects to Kaymakli via an underground tunnel, eight kilometers long.

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Most notably, Londoners took shelter in the tube during the bombings of the First and Second World Wars. They would also shelter in crypts, their desire to live driving them to wait it out amongst the dead.

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West Norwood and Brompton are the easiest to visit: at West Norwood, you can book a tour (fownc.org; you'll also have to become a 'Friend' of the cemetery for a small fee), and Brompton runs around four catacomb open days a year, when you can tour the atmospheric burial chambers for around £5 (brompton-cemetery.org.uk) ...

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The Kingsway Exchange tunnels, an expanse of 8,000 sq m of passageways several hundred feet below High Holborn, were shrouded in mystery for most of the 20th century with details covered by the government's Official Secrets Act, because of their wartime role as a base for MI6 officials.

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Neglected tunnels aren't only an urban phenomenon. California is pocked with discarded underground pathways created during the Gold Rush, like the Burro Schmidt tunnel in the Mojave Desert. There are 47,000 abandoned mines in the Golden State alone.

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MTA explained it was an existing tunnel that has appeared on past maps before. Archival maps featuring the New York subway system have shown this vanishing tunnel twice: during the winter of 1998 and in the summer of 1995. In both instances the tunnel was used as a temporary reroute for the Q train during construction.

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The largest underground city in the United States is the SubTropolis, which is an artificial cave located just above the Missouri River in Kansas City, Missouri. This underground city is 5,100,000 square meters and sits on a 1,100-acre piece of land with limestone deposits dating back to 270 million years ago.

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Derinkuyu – located in the heart of Cappadocia – was built to meet all the needs of the people who lived there, moving their daily lives underground, from children to animals. The city is 85 meters deep and stretches for kilometers, with tunnels connecting it to other Turkish cities.

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The Royal Borough has two foot tunnels at Greenwich and Woolwich which are used by 1.5 million people a year to cross underneath the river Thames. From Greenwich, you can use the foot tunnel to walk to Island Gardens on the north of the river for the famous Canaletto view of Greenwich.

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“The first infrastructures of this type were built at the end of the 19th century, and at present there are nearly 200 underwater tunnels built worldwide. Although some are used for water and electricity supply, most are used to house road or rail connections.

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