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 ...

Archaeologists and academics flock to the castle to see their theories tried out and put into practice. Above all, building a medieval castle requires the skill and co-operation of a workforce ...

Historian Ruth Goodman and archaeologists Peter Ginn and Tom Pinfold turn the clock back to learn the skills of medieval castle builders.