A long-rumored network of secret tunnels sketched by Leonardo da Vinci has been uncovered beneath the Sforza Castle in Milan, ...

Ground scans beneath the medieval fortification of Milan's Sforza Castle have revealed numerous ... Some of these, the researchers say, can be linked to secret military tunnels that can also ...

A team at the Polytechnic University of Milan uncovered secret tunnels beneath Sforza Castle, potentially linked to Leonardo da Vinci's designs.