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

In a twist worthy of a Renaissance mystery, Leonardo da Vinci's sketches have revealed hidden secrets beneath the Sforza ...

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

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

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

Behind a blue door in a narrow London passage lies a little-known network of tunnels deep underground, once home to British ...

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 ...

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 ...

General Jose Lemus, commander of Ciudad Juarez's military garrison, said the tunnel "must have taken a long time" to build, ...

"Tulsa Foundation for Architecture Tunnel Tour is one of the most exciting days of the year," said Kuykendall. "We only get to do it twice a year." Kuykendall said the tours are an hour and a ...

Just a few feet underground, researchers discovered evidence of the long-rumored tunnels. “The georadar has enriched the 3D model with data on known but inaccessible spaces, bringing to light unknown ...