Renaissance artist and inventor Leonardo da Vinci drew a series of underground tunnels said to be hidden underneath Milan's ...

Leonardo’s frescoes can be seen in the castle’s Sala delle Asse, or “Room of Wooden Boards.” During this time, he also documented secret passages built for military purposes under the ...

Ground-penetrating radar reveals new secrets under Milan’s Sforza Castle (Politecnico di Milano) Now, a study applying advanced ground-penetrating radar technology provides fresh evidence that ...

By the turn of the century, Sforza Castle boasted among its features four ... But rumors had it that the structure also housed numerous secret walkways, unknown to and unseen by most visitors.

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 ...