A symposium at the Max Planck Institute for the History of Science presented the image of Leonardo da Vinci as a collector and connector of scientific knowledge in Renaissance. Commemorating the 500th anniversary of the death of da Vinci, experts in the field are beginning to reveal the structures underlying his own collection of scientific books and manuscripts. In this report, Thomas de Padova (Der Tagesspiegel) gives a brief overview over the event and the latest research developments on da Vinci.