Mysterious wartime tunnels sprawling under the heart of London are set to be transformed into a high-tech visitor attraction. The City of London Corporation overseeing the Square Mile revealed ...

A SECRET underground Nazi complex that was never completed remains a mystery as no one knows for certain why Adolf Hitler’s ...

NAOURS might look like your classic French village, but underneath is a labyrinth of secret tunnels. There are around 300 ...

Viral video just posted by a US rep shows a secret tunnel nestled under the floorboards of the US Capitol that, according to legend, was stormed by British soldiers in the War of 1812. Congressman ...

Railway historian Tim Dunn teams up with Siddy Holloway from the London Transport Museum to explore the disused parts of London's tube network, including abandoned tunnels, secret bunkers and ...

Deep in the bowels of the hospital there are the remnants of a secret tunnel to Leicester Prison that’s not supposed to exist. BBC Leicester’s Ben Jackson went for a look around. Produced by ...