![Da Vinci’s Flying Fortress](https://www.illustrationhistory.org/images/uploads/Smith_DaVinci_1.jpg)
“In 1502, Cesare Borgia, illegitimate son of Pope Alexander VI, had his military architect, Leonardo da Vinci, design a heavily armed and armored flying machine to protect his father’s wealth from invaders.”
©Unknown
“In 1502, Cesare Borgia, illegitimate son of Pope Alexander VI, had his military architect, Leonardo da Vinci, design a heavily armed and armored flying machine to protect his father’s wealth from invaders.”
©Unknown