Once only indicated through a sketch by Leonardo da Vinci from around 1495, concealed passageways have been discovered underneath the Sforza Castle in Milan, Italy.

A GROUNDBREAKING discovery has unearthed mysterious tunnels which may have been sketched by Leonardo da Vinci over 500 years ago. The Italian genius, who was a revolutionary mathematician but also

Researchers have discovered hidden tunnels beneath Milan’s Sforza Castle, which may have been used for military defense, possibly connected to Leonard

A team at the Polytechnic University of Milan uncovered secret tunnels beneath Sforza Castle, potentially linked to Leonardo da Vinci's designs.

Scientists have finally uncovered hidden network of tunnels beneath a medieval castle, which were originally sketched by Leonardo da Vinci.The discovery was made during a project to digitize the underground structures of the 15th-century

A mysterious network of tunnels, hidden underneath a medieval castle, sketched by Leonardo da Vinci has been finally uncovered by scientists. The discovery was made after a series of surveys that were conducted to digitise 15th-century Sforza Castle's underground structures using ground-penetrating radar and laser scanning.

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

Researchers in Italy may have uncovered underground tunnels beneath Milan’s Sforza Castle that were once only known through a sketch by Leonardo da Vinci, according to a report by CNN.

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