Renaissance artist and inventor Leonardo da Vinci drew a series of underground tunnels said to be hidden underneath Milan's ...

In a twist worthy of a Renaissance mystery, Leonardo da Vinci's sketches have revealed hidden secrets beneath the Sforza ...

A lost sketch by Leonardo da Vinci has led to the discovery of hidden tunnels beneath Sforza Castle, revealing secrets buried ...

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