Researchers may have found the hidden tunnels beneath a castle in Milan that Leonardo da Vinci sketched in 1495.

A series of underground passages have been found under Sforza Castle in Milan by experts at the city's Polytechnic University ...

Watch as we handcraft a one-of-a-kind secret underwater house, complete with a hidden underground passage, using only primitive tools and natural materials! This project combines engineering, survival ...

Now, Seattle's 150-year-old original streets and passageways are available to tour via Seattle Underground. Buyenlarge / ...

An underground tunnel network long rumored thanks to drawings ... bringing to light unknown walkways and ideas for further ...

The underground spaces that Leonardo described ... bringing to light unknown walkways and ideas for further studies on secret passages,” said Francesca Biolo, one of the university’s ...

TAIPEI, (ANI)- Satellite images have revealed that China is constructing a large wartime military complex in its capital, according to US officials, Taiwan News reported.

The mysterious passages were rediscovered after 500 years under Sforza Castle, which was a medieval fortress built in the ...

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

The death of Floyd Collins one century ago is being remembered as a catalyst for the formation of Mammoth Cave National Park, ...