An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to ...

One of the most prominent rumors surrounding the over 575-year-old fortress has long been the existence of secret passageways beneath the grounds originally hinted at by Leonardo da Vinci.

Leonardo da Vinci approached the world with a fearless ... As an adolescent his father brought him to Florence, a city-state at the heart of the Renaissance, blossoming with art and architecture ...

Explore Leonardo da Vinci's most famous works like the Mona ... And they're meeting in an occupied city, whose authorities are plotting against them. And of course, sitting in their midst is ...