ROC399241: The bust of a grotesque old woman, c.1510-20 (chalk on paper), Vinci, Leonardo da (1452-1519) (after) / Royal Collection Trust / Bridgeman Images

ROC443652: A portrait of Leonardo, a head of a man, and horse' fore-leg, c.1517-18 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) (studio of) / Royal Collection Trust / Bridgeman Images

ROC3619113: The head of a grotesque animal, c.1490-95 (pen & ink on paper), Vinci, Leonardo da (1452-1519) (studio of) / Royal Collection Trust / Bridgeman Images

SIC830029: Children Interacting With A Display Featuring Flying Machines Designed By Leonardo da Vinci / Museum of Science and Industry, Chicago, USA / Bridgeman Images

XLF3787500: The Life of Leonardo da Vinci: Duomo of Milan / Bridgeman Images

CH1770789: Mona Lisa, 1978 (synthetic polymer and silkscreen ink on canvas), Warhol, Andy (1928-87) / Private Collection / Bridgeman Images

CH1770837: Multicoloured Retrospective Painting, 1979 (acrylic and silkscreen inks on canvas), Warhol, Andy (1928-87) / Private Collection / Bridgeman Images

FLO6338712: Portrait of Nicolas Poussin, leading painter of the classical French Baroque style, 1594-1665 He holds a book with De, Clouwet, Albertus (1636-79) / Bridgeman Images

CH986849: Yin and Yang, 1988 (oil on linen), Paschke, Ed (1939-2004) / Private Collection / Bridgeman Images

TAD1744900: war machines studies , c. 1478-1518, drawing by Leonardo da Vinci, from the Codex Arundel (Feuille1030) collection BritishMuseum / Bridgeman Images

FAF3563726: Piazza della Scala in Milan; the monument to Leonardo da Vinci can be glimpsed in the background / Bridgeman Images

PVD1689811: On may 2, 1519, Leonardo da Vinci dies in arms of french king Francois 1st, engraving after Ingres / Bridgeman Images

TAD1761345: The Clos Luce near Amboise, France, where died Leonardo da Vinci (1452-1519), 19th century engraving / Bridgeman Images

MEV5049502: The angel, detail from The Virgin of the Rocks, after Leonardo da Vinci (1452-1519), c.1611-18 (oil on panel), Bianchi, Andrea Il Vespino (fl.1612-1640) / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

FAF3561820: Sala delle Asse, Castello Sforzesco, Milan, with frescoes by Leonardo da Vinci / Bridgeman Images

CH987447: L.H.O.O.Q., 1920 & 1942 (pencil and ink on an engraving of Leonardo da Vinci's Mona Lisa), Duchamp, Marcel (1887-1968) / Private Collection / Bridgeman Images

BOJ1777383: Cover of German edition of book by Sigmund Freud "Leonardo da Vinci and a Memory of His Childhood" leipzig and Vienne 1919 / Bridgeman Images

EVB2924973: Sophia Loren holds her son, Carlo Ponti, Jr., at Rome's Leonardo da Vinci Airport. July 31, 1970 / Bridgeman Images

MRZ5032296: The artists of the court of Ludovic Marie Sforza known as the More (Ludovico Maria Sforza detto il Moro, 1452-1508), 1823 (oil on canvas), Diotti, Giuseppe (1779-1846) / Museo Civico, Lodi, Italy / Bridgeman Images

BOJ1777362: Cover of book by Sigmund Freud "Leonardo da Vinci and a Memory of His Childhood" with annotation by Marie Bonaparte, Paris 1927 / Bridgeman Images

MEV5044386: The Virgin of the Rocks, after Leonardo da Vinci (1452-1519), c.1611-18 (oil on panel), Bianchi, Andrea Il Vespino (fl.1612-1640) / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

TRK879454: Terrestrial globe by cosmographer Vicenzo Coronelli (1650-1718). Detail. / Museo Nazionale della Scienza e della Tecnologia 'Leonardo Da Vinci', Milan, Italy / Bridgeman Images

LSE4088163: Leonard de Vinci (1452 - 1519) (Leonardo da Vinci) showing his fresco “” The Holy Cene”” by Ludovic Sforza dit The More, Duke of Milan - chromo., v.1900, Unknown Artist, (20th century) / Private Collection / Bridgeman Images

LLM2785039: Il restauro del Cenacolo (colour litho), Molino, Walter (1915-1997) / Private Collection / Bridgeman Images

TRK879453: Terrestrial globe by cosmographer Vicenzo Coronelli (1650-1718). / Museo Nazionale della Scienza e della Tecnologia 'Leonardo Da Vinci', Milan, Italy / Bridgeman Images

TRK879456: Terrestrial globe by cosmographer Vicenzo Coronelli (1650-1718). / Museo Nazionale della Scienza e della Tecnologia 'Leonardo Da Vinci', Milan, Italy / Bridgeman Images

TRK879457: Telescope. / Museo Nazionale della Scienza e della Tecnologia 'Leonardo Da Vinci', Milan, Italy / Bridgeman Images

MEV5049500: Rocks, detail from The Virgin of the Rocks, after Leonardo da Vinci (1452-1519), c.1611-18 (oil on panel), Bianchi, Andrea Il Vespino (fl.1612-1640) / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

TRK879455: Terrestrial globe by cosmographer Vicenzo Coronelli (1650-1718). Detail. Europe. / Museo Nazionale della Scienza e della Tecnologia 'Leonardo Da Vinci', Milan, Italy / Bridgeman Images

MEV5049499: Infant Saint John the Baptist, detail from The Virgin of the Rocks, after Leonardo da Vinci (1452-1519), c.1611-18 (oil on panel), Bianchi, Andrea Il Vespino (fl.1612-1640) / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5049501: Child Jesus, detail from The Virgin of the Rocks, after Leonardo da Vinci (1452-1519), c.1611-18 (oil on panel), Bianchi, Andrea Il Vespino (fl.1612-1640) / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

USB1158688: A Naked Boy (after Leonardo da Vinci), Flemish School, (16th century) / Tatton Park, Cheshire, UK / Bridgeman Images

UIT6188825: Piazza Della Scala, Milan, Lombardy, Italy 1900-10 (b/w photo) / Bridgeman Images

LLM5217422: Theft of the Mona Lisa: arrival of La Gioconda in Milan, Italy, 1913 (litho), European School, (20th century) / Private Collection / Bridgeman Images

AAV997263: Chateau de Chambord, Chambord, Loir-et-Cher, France, Aznar Cenamor, Fernando / Private Collection / Bridgeman Images

PRX1001936: Leonardo da Vinci, 1884-90 (phototype), German School, (19th century) / Private Collection / Bridgeman Images