We’re venturing even deeper into the secret tunnels beneath the city, pushing past dead ends and splitting off into new, unexplored passageways. As we navigate the dark, eerie corridors, we encounter ...

An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to exist. Ground-penetrating radar and laser scanning revealed that the ...

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Last April, Nasa scientist Chad Greene and his crew were flying over Greenland when their radar unexpectedly picked up ...

The hidden passage, dug 12 meters below ground, was discovered during a dramatic raid on a warehouse in Ceuta’s industrial ...

The term “iceberg home” describes houses with elaborate lower levels like the Kansas City home of Chiefs player Travis Kelce.

Documents detailed the true extent of Camp Century and the incredible American ingenuity that brought it to life.

A sprawling network of secret underground tunnels is being transformed into a major new London tourist attraction. Hidden 40m below the streets of the capital, the Kingsway Exchange Tunnels were ...

The Kingsway Exchange Tunnels are expected to open to the public by late 2027 or early 2028. It is a $149 million project, ...