An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza ... and laser scanning that mapped multiple feet under the castle. In doing so, they ...

PARIS, France (CNN)-- Drawings on the back of a Leonardo da Vinci painting may have been sketched by the Italian Renaissance artist, but only more tests by museum experts will tell. The Department ...

Sketches from 1495 depict underground passageways beneath the castle, likely intended for soldiers to navigate in the event ...