ROC3956000: A rocky outcrop, c.1510-15 (black chalk), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

CHT164555: The Heart and the bronchial arteries, facsimile of the Windsor book (pen and ink on paper), Vinci, Leonardo da (1452-1519) (after) / Bibliotheque des Arts Decoratifs, Paris, France / Bridgeman Images

XIR161935: Studies of Figues and Decorations, c.1480-82 (pen & ink and metal point), Vinci, Leonardo da (1452-1519) / Musee Bonnat, Bayonne, France / Bridgeman Images

MEV5047579: De Divina Proportione, Figure X, sheet 96 recto: Cut empty hexahedron, cube, Exacedron abscisvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

GIA4794210: War machine: Catapult study by Leonard de Vinci (Leonardo da Vinci) (1452 - 1519)., Vinci, Leonardo da (1452-1519) / Museo Nazionale della Scienza e della Tecnologia 'Leonardo Da Vinci', Milan, Italy / Bridgeman Images

MEB848318: Refectory of Santa Maria delle Grazie, Milan. On the back wall The Last Supper, by Leonardo da Vinci, 15th Century, tempera and oil on two layers of plaster, Vinci, Leonardo da (1452-1519) / Museo del Cenacolo Vinciano, Santa Maria delle Grazie (Museum of the Last Supper), Milan, Italy / Bridgeman Images

BI110030: La Belle Ferronniere, c.1802-06 (black chalk and wash on paper) (b/w photo), Ingres, Jean Auguste Dominique (1780-1867) / The Henry Barber Trust, The Barber Institute of Fine Arts, University of Birmingham / Bridgeman Images

MEV5047603: De Divina Proportione, Figure XXXIIII, sheet 108 recto: Cut and elevated empty dodecahedron, Dvodecedron abscisvs elevatvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5047587: De Divina Proportione, Figure XVIII, sheet 100 recto: Cut empty octahedron, Octocedron abscisvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

CH827893: Drapery Study for a kneeling figure, (brush and brownish-grey distemper heightened with white on linen), Vinci, Leonardo da (1452-1519) / Private Collection / Bridgeman Images

XIR154607: Two Heads (pen and ink on paper), Vinci, Leonardo da (1452-1519) / Louvre, Paris, France / Bridgeman Images

ROC5617357: Two fires set by the Swiss army outside Milan, with notes; and a, Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5674279: A view of the Adda river valley, c.1511-13 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC427444: Head of a snarling lion and notes, c.1500-02 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

LRI4684836: Detail of the last supper: on the left the Apostles Judas, Peter and John, Christ in the centre and the Apostles Thomas, James the Major and Philip. 1495-1498 (fresco), Vinci, Leonardo da (1452-1519) / Museo del Cenacolo Vinciano, Santa Maria delle Grazie (Museum of the Last Supper), Milan, Italy / Bridgeman Images

ROC492351: Mountain ranges, with notes, c.1510 (red chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5669154: A satire on aged lovers, c.1490 (leadpoint, pen & pale ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC412171: Studies of flowing water, with notes, c.1510-13 (pen & ink over red chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC399271: The surface anatomy of the shoulder and arm, c.1510 (pen & ink with black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5674272: The right ventricle and tricuspid valve, c.1512-13 (pen & ink on blue paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5892742: Recto: The vessels of the pelvic region, c.1508 (pen and ink over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5617353: Recto: A study of two figures, c.1492 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XJF311694: Drapery study for a kneeling figure seen in three-quarter profile to the left, c.1475 (tempera with white heightening on canvas), Vinci, Leonardo da (1452-1519) / British Museum, London, UK / Bridgeman Images

BIF161993: Sketch of a church similar to St. Sepolcro in Milan, fol. 4r from Codex Ashburnham I and II (formerly part of Ms B (2184) and Ms A), c.1492 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

BIF267171: Paris Manuscript E, fol. 53v and 54r: Sketch depicting the flight of birds, 1513-14 (pen and ink on paper), Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

ROC405160: Notes and diagrams on astronomy and geometry, and the head of a horse, c.1503 (pen & ink with black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5648230: A mountainous landscape, c.1506-10 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC441163: The head and shoulders of a woman, almost in profile, c.1485 (metalpoint on pale blue paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

JLJ4583768: Notes and sketches of botany and geometry (miniature), Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

XIR217645: Stella octangula, from 'De Divina Proportione' by Luca Pacioli, published 1509, Venice (engraving) (b/w photo), Vinci, Leonardo da (1452-1519) / Bibliotheque Nationale, Paris, France / Bridgeman Images

XBP340121: Scientific diagrams, from the 'Codex Leicester', 1508-12 (sepia ink on linen paper) (detail of 240120), Vinci, Leonardo da (1452-1519) / Private Collection / Bridgeman Images

ROC3703891: A horse divided by lines, c.1490 (metalpoint on pale blue prepared paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5674274: A design for an equestrian monument, c.1485-88 (metalpoint on blue-grey prepared paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC443713: A seated youth, and a child with a lamb, c.1506 (black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC443757: The Bust of a man, c.1505-10 (red & black chalks on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC443711: Three diagrams of the head showing the eyes and brain, c.1508 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images