Leonardo da Vinci’s Codex Atlanticus Gets a Digital Reassembly in Florence
A Renaissance manuscript split apart more than four centuries ago is being made whole again, at least on screen. Florence’s Museo Galileo has launched Leonardotheka 2.0, a digital platform that reunites the 1,119-page Codex Atlanticus held by Milan’s Veneranda Biblioteca Ambrosiana with the roughly 550 pages removed in the late 16th century by Italian sculptor Pompeo Leoni and now owned by the U.K.’s Royal Collection Trust.
The project gives scholars a new way to move through Leonardo da Vinci’s notes, drawings, and technical studies, which were produced between the 1470s and his death in 1519. The Codex Atlanticus is the largest of more than a dozen codices associated with Leonardo, and it includes some of his best-known ideas, among them a flying machine and a harpsichord-viola.
Leonardo’s manuscripts passed first to his last pupil, Francesco Melzi, and later to Leoni, who cut the folios into two albums according to his own taste, separating artistic experiments from technical and scientific material. That division ran against a central Renaissance belief that art and science were inseparable. The split also sent the two halves of the manuscript into different national collections for centuries.
Leonardotheka has already been accessible in part since 2023, but the new version reconstructs 50 additional pages by comparing dimensions, preparation methods, materials, and watermarks. Among the most notable reunions is a drawing of a horse brought back together with Leonardo’s notes on Pavia’s Regisole equestrian monument, a pairing thought to capture the moment he settled on the final design for the never-completed Francesco Sforza monument.
Paolo Galluzzi, president emeritus of Museo Galileo, called the platform “a tool that offers scholars worldwide unprecedented opportunities to explore the vast and invaluable wealth of information contained within Leonardo da Vinci’s manuscripts.” Roberto Ferrari, the museum’s executive director, said the project also pushes back against the “proliferation of generic digital libraries” and the effort to turn Leonardo’s legacy into a commercial asset.
For researchers, the significance is practical as well as symbolic. Leonardotheka 2.0 does not merely display Leonardo’s pages; it restores relationships between image, text, and material evidence that were broken when the manuscript was dismantled. In doing so, it offers a model for how museums can use digital tools to recover historical context without surrendering control of their collections.
