A medieval French castle dripping with history ... several fireplaces and stone staircases. A 15th-century outbuilding seals the deal as a bonus history nugget. Spanish historian Ivo Fornesa ...

Sketches from around 1495 by the renowned inventor reference underground passageways underneath the medieval castle ... intended to digitise the 15th century Sforza Castle’s underground ...

A mysterious network of tunnels, hidden underneath a medieval castle ... of surveys that were conducted to digitise 15th-century Sforza Castle's underground structures using ground-penetrating ...