An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to exist. Ground-penetrating radar and laser scanning revealed that the historic passages made famous by a Leonardo da Vinci drawing is just one of multiple tunnel sections.

A technological investigation at Sforza Castle found that it does in fact hold underground passages once described by Leonardo da Vinci.

Archaeologists Blown Away After Finding Secret Tunnels That Da Vinci Had Drawn Over 500 Years Ago Researchers from the Polytechnic Institute of Milan visited the site of Italy’s famed Sforza Castle as part of a doctoral thesis and conducted a technological study.

Italy's Sforza Castle includes a underground passage that linked the Duke of Milan to his wife’s tomb.

A lost sketch by Leonardo da Vinci has led to the discovery of hidden tunnels beneath Sforza Castle, revealing secrets buried for centuries

Beneath Sforza Castle in Milan, researchers have discovered a series of secret tunnels—passageways once sketched by the Renaissance artist and scientist Leonardo da Vinci and traversed by a widower sick with grief.

As per the Politecnico di Milano, the investigation has “revealed the presence of numerous underground passages under the Sforza Castle.”

New research uncovered hidden passages under Sforza Castle, potentially confirming legends linked to Leonardo da Vinci’s designs. As part of a PhD thesis, the Politecnico di Milano conducted an advanced technological survey in collaboration with the Sforza Castle,

Scientists have discovered hidden structures underneath Milan’s 15th-century Sforza Castle, hinting at the presence of secret passageways depicted in the drawings of Leonardo da Vinci.

Researchers from the Politecnico di Milano have uncovered hidden underground passageways beneath Milan’s iconic Sforza Castle.