ELC850944: Equestrian Monuments Statue of Francesco Sforza (Monumento equestre a Francesco Sforza), from Leonardo da Vinci, 20th Century, bronze, Vinci, Leonardo da (1452-1519) / Bridgeman Images

MEV5045460: Codex Atlanticus, sheet 139 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045278: Codex Atlanticus, sheet 55 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

BAT139400: Notes on the Changes of Direction in Flight, manuscript page from Codici Rari III 35.2, fol. 10v from Treatise on the Flight of Birds, 1505 (pen and ink on paper), Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

ROC3740757: The bones and muscles of the leg, c.1510-11 (pen & ink with wash over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

MEV5045600: Codex Atlanticus, sheet 209 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5047032: Codex Atlanticus, sheet 920 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5045167: Codex Atlanticus, sheet 1 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5046866: Codex Atlanticus, sheet 837 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

RTR5315915: Birds Flight Code, c. 1505-06, paper manuscript, cc. 18, sheet 9 verso, Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

RTR5315933: Birds Flight Code, c. 1505-06, paper manuscript, cc. 18, sheet 18 verso, Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

RTR5315956: Three views of manly head with beard, c. 1502 (blood on paper), Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

ROC409854: The muscles of the upper spine, c.1510 (pen & ink with wash, over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

LAL304224: When They Were Young: Leonardo da Vinci, Jackson, Peter (1922-2003) / Private Collection / Bridgeman Images

ROC399231: Two heads of grotesque animals, c.1490-95 (pen & ink and chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC1546906: A copse of trees, c.1500-10 (red chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC399233: The anatomy of a bear's foot, c.1485-90 (pen & ink with heightening over metalpoint on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

CH376612: The Codex Hammer or Codex Leicester, 1508-12 (sepia ink on linen paper), Vinci, Leonardo da (1452-1519) / Private Collection / Bridgeman Images

GIM5038309: Florentine Art of the 19th century, Statue of Leonardo da Vinci (Leonardo da Vinci) (1452 - 1519), Uffizi, Florence (Immagina), Vinci, Leonardo da (1452-1519) / Bridgeman Images

JLJ4687574: Flying machine drawing. Manuscript by Leonard De Vinci (Leonardo da Vinci, 1452-1519), 16th century. Paris, Library of the Institute, Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

ROC478417: A tree, dandelions and rushes, c.1510 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XJF308752: Detail of a Centralised church, c.1488 (pen & ink and wash over black chalk), Vinci, Leonardo da (1452-1519) / Institut de France, Paris, France / Bridgeman Images

ROC427466: The uterus of a gravid cow, c.1508-09 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

FAF3566022: Seven grotesque heads; drawing by Leonardo da Vinci. Gallerie dell'Accademia, Venice, Vinci, Leonardo da (1452-1519) / Gallerie dell'Accademia, Venice, Italy / Bridgeman Images

LAL304222: When They Were Young: Leonardo da Vinci, Jackson, Peter (1922-2003) / Private Collection / Bridgeman Images

XLA3769267: Leonardo da Vinci -, Vinci, Leonardo da (1452-1519) (after) / Bridgeman Images

FAF3566082: Study of a male face; drawing by Leonardo da Vinci. The Louvre, Paris, Vinci, Leonardo da (1452-1519) / Louvre, Paris, France / Bridgeman Images

PWI108519: Bacchus, c.1695 (oil on canvas), Vinci, Leonardo da (1452-1519) (studio of) / Louvre, Paris, France / Bridgeman Images

RTR5315928: Birds Flight Code, c. 1505-06, paper manuscript, cc. 18, sheet 16 recto, Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

RTR5315934: Bird Flight Code, c. 1505-06, paper manuscript, cc. 18, Cover III, Vinci, Leonardo da (1452-1519) / Biblioteca Reale, Turin, Piedmont, Italy / Bridgeman Images

ROC399244: The bust of a man and the head of a lion, c.1505-10 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

LAL3641237: A young Leonardo Da Vinci assisting his master Verrocchio with The Baptism Of Christ (gouache on paper), McBride, Angus (1931-2007) / Private Collection / Bridgeman Images

MEV5046803: Codex Atlanticus, sheet 806 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC399265: The bones of the foot, and the muscles of the neck, c.1510 (pen & ink with wash over black chalk on paper) (verso of 5321249), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC489436: A Map of the Pontine marshes, 1515 (pen & ink with wash, gouache & chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

MEV5046763: Codex Atlanticus, sheet 786 recto, Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images