Archaeologists Followed a Sketch by Leonardo da Vinci. It Led to Secret Tunnels Under an Ancient Castle.
An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to ...
Artnet2d
Leonardo da Vinci Described Secret Passages in Sforza Castle. High-Tech Analysis Just Proved Him Right
A technological investigation at Sforza Castle found that it does in fact hold underground passages once described by ...