Leonardo da Vinci lived from 1452 to 1519. Over the course of his life, the Italian Renaissance man proved his genius across multiple fields, including painting, drawing, inventing, and anatomy. His Codices in particular hold the internal workings of his mind.

Spanning about 6,000 pages, these collected notes can now be explored through an online experience, aptly called Inside A Genius Mind, which was created by a fascinating collaboration of AI technology and human scholarship. The codices include the Codex Atlanticus and the Codex Leicester (or Codex Hammer), the latter of which is owned by Bill Gates. He purchased it for over $30 million back in 1994.