Sketches in Leonardo da Vinci's Codex Forster I appear to show tunnels leading from the castle. Ground-penetrating radar appears to have found them, centuries later.

Leonardo da Vinci alluded to the existence of tunnels under an Italian castle in a painting. Were they merely fictional? Experts believe an intricate system of tunnels lies under this ancient castle ...

Leonardo da Vinci's famous 15th-century work, "The Last Supper" (or “Il Cenacolo” in Italian) lies inside Milan's Santa Maria delle Grazie church. Depicting the moment that Christ tells his ...

This connected Sforza Castle to the Basilica of Santa Maria delle Grazie, where his beloved wife was buried.

An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to exist.

Other passages hint at more personal and ceremonial uses, with one tunnel in particular showing signs that it may have connected the castle to key sites within Milan, including the Basilica of Santa ...

The Last Supper Background Between 1463 and 1483, the royal family built the Dominican monastery, Santa Maria delle Grazie (Holy Mary of Grace). It was dedicated to the Graces so they may ward against ...

One of the tunnels led to the Basilica of Santa Maria delle Grazie, the resting place of the wife of Duke Ludovico Sforza, better known as Ludovico il Moro, the duke of Milan from 1494 to 1498.

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

Alongside his frescoes, da Vinci also made note of the castle’s mysterious underground tunnels in his sketches. For centuries, mentions of these passageways fascinated historians. They are rumored to ...