Sketches in Leonardo da Vinci's Codex Forster I appear to show tunnels leading from the castle. Ground-penetrating radar ...

Leonardo da Vinci Drew Tunnels 530 Years Ago. Now, Archaeologists May Have Found Them for Real For decades, the famous ...

Archaeologists Followed a Sketch by Leonardo da Vinci. It Led to Secret Tunnels Under an Ancient Castle.

TheWrap magazine: "There’s a way in which Leonardo reminds me of the 'Millennium Falcon' going to light speed — that energy ...