An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to ...

A sprawling network of secret underground tunnels is being transformed into a major new London tourist attraction. Hidden 40m ...

A secret tunnel discovered last week on the U.S.-Mexico border will be sealed by Mexican authorities, an army official in ...

Denver’s weed church, zodiac predictions for the Year of the Snake, plus what promises to be London’s most ambitious – and ...

A labyrinth of tunnels beneath the heart of London is destined for a new lease of life as a tourist attraction with up to ...

Ghosts of past spies haunt London underground tunnels Behind a blue door in a narrow London passage lies a little-known network of tunnels deep underground, once home to British spies and a secret ...

Using ground-penetrating radar and laser scanners, researchers identified subterranean structures just a few feet below the ...

A secret tunnel discovered last week on the U.S.-Mexico border will be sealed by Mexican authorities, an army official in Ciudad Juarez said Saturday. The tunnel, discovered on Jan. 10 ...

An underground tunnel network long rumored thanks to drawings ... bringing to light unknown walkways and ideas for further studies on secret passages,” Francesca Biolo, researcher at Polytechnic ...