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

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

A 500-year-old sketch by Leonardo da Vinci has led to the remarkable discovery of hidden tunnels beneath Sforza Castle 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 ...

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

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 ...

"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 ...

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