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

ROC5674277: A deluge, c.1517-18 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC5614664: The head and shoulders of an old man in profile wearing a hat, c.1480-85 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

LRI4635234: Geometry: “” A Polyhedron”” Page taken from the manuscript “” De divina proportione”” (On divine proportions) by mathematician Fra Luca Pacioli dit Luca di Borgo (1445-1517) illustrated by Leonardo da Vinci (1452-1519).1509., Vinci, Leonardo da (1452-1519) / Private Collection / Bridgeman Images

MEV5045167: Codex Atlanticus, sheet 1 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC5863690: Recto: The muscles of the back and arm, c.1508 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC3823043: Verso: The proportions of foot in relation to the face, c.1490 (pen & ink on paper) (verso of 3823042), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XIR207737: Leonardo da Vinci (1452-1519) painting the Gioconda, engraved by Lemoine, 1845 (engraving) (b/w photo), Brune, Aimee (1803-66) / Private Collection / Bridgeman Images

FTB165453: Horse and Cavalier (pen and ink on paper), Vinci, Leonardo da (1452-1519) (school of) / Gallerie dell'Accademia, Venice, Italy / Bridgeman Images

FAF3565982: Portrait of Leonardo da Vinci, copy of Selfportrait of Leonardo da Vinci, sanguigna, Accademia Gallery, Venice, Vinci, Leonardo da (1452-1519) (after) / Gallerie dell'Accademia, Venice, Italy / Bridgeman Images

MEV5045500: Codex Atlanticus, sheet 159 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC5669156: A caricature of a lawyer or an academic, c.1495 (chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XJF311218: Study of Horsemen in Combat, 1503-4 (pen and ink on paper), Vinci, Leonardo da (1452-1519) / British Museum, London, UK / Bridgeman Images

ROC427446: Studies of gun-barrels and mortars, c.1485-90 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XOS3959941: Saint John the Baptist, 1505-07 (oil on poplar wood), Vinci, Leonardo da (1452-1519) (studio of) / Kunstmuseum, Basel, Switzerland / Bridgeman Images

XKH179071: Figural Study for the Adoration of the Magi (Joseph and Two Shepherds and Sketches for the Christ Child), c.1481 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Hamburger Kunsthalle, Hamburg, Germany / Bridgeman Images

LST204010: Ad Omnia Leonardo da Vinci, thought to be a self portrait of the artist (oil on canvas), Melies, Georges (1861-1938) / Private Collection / Bridgeman Images

IMJ245455: L.H.O.O.Q., 1919/64 (pencil over colour litho), Duchamp, Marcel (1887-1968) / The Israel Museum, Jerusalem, Israel / Bridgeman Images

ROC427434: Storm over a hilly landscape, c.1517-18 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

MEV5047591: De Divina Proportione, Figure XXII, sheet 102 recto: Perpendicular empty icosahedron, Ycocedron planvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

XOT405720: The Baptism of Christ by John the Baptist, c.1475 (oil on panel) (detail of 362326), Verrocchio, Andrea (1435-88) & Vinci, Leonardo da(1452-1519) / Galleria degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

GDE213326: Leo and Mona, Dean, Graham (b.1951) / Private Collection / Bridgeman Images

BMR214060: Res 4720 The letter 'A', illustration for 'De Divina Proportione' by Luca Pacioli (1445-1517), 1509 (lithograph), Vinci, Leonardo da (1452-1519) / Bibliotheque Mazarine, Paris, France / Bridgeman Images

MEV5047581: De Divina Proportione, Figure XII, sheet 97 recto: Elevated empty hexahedron, cube, Exacedron elevatvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5047595: De Divina Proportione, Figure XXVI, sheet 104 recto: Elevated empty icosahedron, Ycocedron elevatvs vacvvs, Vinci, Leonardo da (1452-1519) (attr.to) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

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

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

COU65802: Studies for a 'St. Mary Magdalene', c.1480-83 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / The Courtauld, London (Samuel Courtauld Trust) / Bridgeman Images

FAF152182: Head of a Woman in Profile (red chalk on paper), Vinci, Leonardo da (1452-1519) / Galleria degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

SBL3362061: St Jerome, c.1480-82, Vinci, Leonardo da (1452-1519) / Vatican Museums and Galleries, Vatican City / Bridgeman Images

ROC3956002: A description of a deluge, with marginal sketches, c.1517-18 (pen & ink), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

GIM5038421: The Baptism of Christ around 1475 - 1478 by Andrea del Verrocchio (1436-1488) and Leonardo da Vinci (Leonard of Vinci) (1452-1516), Oil and tempera on wood, 177 x 151 cm - Uffizi Gallery, Florence Raphael, Vinci, Leonardo da (1452-1519) / Galleria degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

GIA5035842: Study on wings. Codex Atlantic. Atlantic Codex, Drawing by Leonard de Vinci (Leonardo da Vinci) around 1499., Vinci, Leonardo da (1452-1519) / Bridgeman Images