Once only indicated through a sketch by Leonardo da Vinci from around 1495, concealed passageways have been discovered ...

A GROUNDBREAKING discovery has unearthed mysterious tunnels which may have been sketched by Leonardo da Vinci over 500 years ...

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

Researchers uncover hidden passages beneath Milan’s Sforza Castle, confirming centuries-old theories.

Researchers have discovered hidden tunnels beneath Milan’s Sforza Castle, which may have been used for military defense, ...

A GROUNDBREAKING discovery has unearthed mysterious tunnels which may have been sketched by Leonardo da Vinci over 500 years ... may have been responsible for the secret passages found under ...

(CNN) — Leonardo da Vinci excelled in the fields of art ... But to the researchers’ surprise, their survey revealed a second secret tunnel that experts had only hypothesized about for years.

Researchers in Italy may have uncovered underground tunnels beneath Milan’s Sforza Castle that were once only known through a ...