From reproductions, we remember a diagram of proportions and measurements: the nude in superimposed positions, arms and legs doubled, within a square and circle — symbolising earth and heaven, man ...

Never has a piece of art attracted more interest than a half-length portrait painting by the Italian artist Leonardo da Vinci ...

Have you ever pictured yourself as "Mona Lisa," that mysterious lady that Leonardo da Vinci painted so long ago? Or do you have more in common with the stalwart farmers of "American Gothic" that Grant ...

Despite being a prolific draughtsman, fewer than 20 paintings by Leonardo survive. But which were his greatest hits?