MEV5854083: A Plato student, Plato (Leonardo da Vinci or Fra' Giovanni Giocondo) and Aristotele (Bastiano da Sangallo), detail of the preparatory cartoon for The School of Athens, 1510 (charcoal and white lead), Raphael (Raffaello Sanzio of Urbino) (1483-1520) / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

MEP2336408: Experimental helicopter by Enrico Forlanini, . / Bridgeman Images

MEV5048634: Woman Head / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

XJL62347: The Procession, 1892-95 (oil on canvas), Pellizza da Volpedo, Giuseppe (1868-1907) / Museo Nazionale della Scienza e della Tecnologia 'Leonardo Da Vinci', Milan, Italy / Bridgeman Images

MEV5044328: Saint John the Baptist, 1510-20 (tempera & oil on panel), Caprotti, Gian Giacomo (c.1480-c.1524) (attr. to) / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

EVB2937284: Cartoon of police guarding the Mona Lisa as the painting returns to France. More than two years after its theft by Vincenzo Peruggia, Leonardo painting was recovered and returned to the Louvre, in Paris. 1913 / Bridgeman Images

PRO6428351: The Industrial School “Leonardo da Vinci” in Via Terzolle, Florence, Italy, 1935 - 1945, Unknown photographer, (20th century) / Bridgeman Images

MEV5048618: Three Studies / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5051279: The Practice of Perspective or Many chapters about the rules of painting and how to draw percpectives, shadows, distances, heights / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5048431: Study of Male Figure / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEP943644: Head of an old man, by Bernardino Luini, 1510 - 1515, 16th Century, torn fresco in solid wood, diameter of 28 cm, Luini, Bernardino (c.1480-1532) / Bridgeman Images

MEV5049369: Treatise on the many landscape appearances / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5051280: Treatise on Shadows and Lights with Related Linear Drawings / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5048632: Young Man Head / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5048596: Angel Head / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5048581: Grotesque Figure of an Old Man / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5051087: Horse Head / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5049791: The Last Supper / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

KNT3821522: The Giant - shown: (photo), . / Bridgeman Images

MEB2652159: Departure of Pope Francis for his apostolic trip to Ecuador, Bolivia and Paraguay, Fiumicino, Italy, 2015 (photo), . / Bridgeman Images

ICA4865097: Illustration in Le Rire, 17/08/12 - The pseudo-imitation of a false imitation Mona Lisa - Art, Musee Expositions, Louvre - Mona Lisa (engraving), Metivet, Lucien (1863-1930) / Bridgeman Images

DSP3254362: Co Derry,Northern Ireland;Restaurant Exterior (photo), . / Bridgeman Images

MEV5047644: Drawing of Roman Ruins / Pinacoteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5051281: Treatise on Shadows and Lights with Related Linear Drawings / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEV5048617: Laughing Old Man / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

MEB943620: Saint Euphemia, by Unknown Artist closed to Giovannino de' Grassi, 1390 - 1399, 14th Century, torn fresco, 324 x 105 cm / Bridgeman Images

AGN264328: The Death of Leonardo in 1519 (pencil, ink & wash on paper), Cosway, Richard (1742-1821) / Private Collection / Bridgeman Images

HFE4447797: Rosa x/Pink 'Leonard De Vinci', . / Bridgeman Images

HFE4447812: Rosa x/Pink 'Leonard De Vinci', . / Bridgeman Images

GIA4766716: Leonardo Vinci, Italian composer, 1690-1732., Unknown Artist, (19th century) / Private Collection / Bridgeman Images

GIA4766732: Leonardo Vinci, Italian composer, 1690-1732., Unknown artist, (18th century) / Private Collection / Bridgeman Images

HFE4456609: Rosa x/Rose 'Leonard de Vinci', . / Bridgeman Images

GIE4905469: Portrait of the Italian writer Simona Vinci (nee 1970), . / Bridgeman Images

GIE4905368: Portrait of the Italian writer Simona Vinci (nee 1970), . / Bridgeman Images

GIE4905425: Portrait of the Italian writer Simona Vinci (nee 1970), . / Bridgeman Images

HFE4447782: Rosa x/Pink 'Leonard De Vinci', . / Bridgeman Images