The Madrid Codices, written by Leonardo da Vinci, were discovered in this library. The first codex was finished during 1490-1499 and the second was finished during 1503-1505.

Where the first quartz wristwatch was developed. It is registered on the List of the Institute of Electrical and Electronics Engineers (IEEE) Milestones as a key advance in Electrical Engineering.

This is where the first quartz clock was developed by Warren Marrison.