Researchers may have found the hidden tunnels beneath a castle in Milan that Leonardo da Vinci sketched in 1495.
Smithsonian Magazine on MSN18d
Secret Passageways Recorded in Leonardo da Vinci's Sketches Discovered Beneath a Medieval Castle in MilanBeneath 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 ...
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