when Leonardo da Vinci penned a letter to the Duke of Milan that included a design for what is considered a proto-tank -- one of many inventions you may not have realized came from da Vinci.

Throughout his lifetime, Leonardo da Vinci designed many fantastical flying machines, self-driving carts and even a tank! Explore 3D models of these wonderful designs. In the mid-1480s ...

Throughout his lifetime, Leonardo da Vinci designed many fantastical flying machines, self-driving carts and even a tank! Explore 3D models of these wonderful designs. You might know that Leonardo ...

There were flying machines, a parachute a robotic knight and even a tank.' LEONARDO DA VINCI:Check me out, I'm gonna blow you up from the 16th Century. FRAN SCOTT:So which one's your favourite ...