Leonardo da Vinci was known as an all-around genius and left outstanding results in all genres including painting, sculpture, and architecture. Many of his advanced ideas, such as flying machines and moving tanks loaded with cannons, were only achieved in the modern era. Among the works left behind by Da Vinci, which can be considered prophetic, there is one that talks about the extinction of humanity... And what is the meaning behind Mona Lisa's smile? Da Vinci's mystery is now solved.