William Turner

M. C. Escher 

 Gustav Klimt

 Claude Monet

 Salvador Dalí

Pablo Picasso 

Albrecht Durer

 Wassily Kandinsky

Edgar Degas 

Egon Schiele

Georges Seurat 

Caravaggio Michelangelo 

Edward Hopper 

Hieronymus Bosch

Katsushika Hokusai

Grant Wood 

Jan Vermeer 

Jack Vettriano  

Caspar David Friedrich

Frederick Leighton

Edmund Blair Leighton 

Michelangelo Buonarroti

Jacques-Louis David 

John William Waterhouse 

 Alphonse Mucha

Jean Auguste Dominique Ingres 

 Paul Klee

 Theodore Gericault

 Paul Cezanne

 Edvard Munch

  Ando Hiroshige

Starry Night

 The Creation of Adam

 Altdorfer Albrecht

 Hokusai Katsushika

PC: Right click on image and 'Set as Background' or 'Set as Wallpaper'
MAC OSX: Drag the image onto your desktop. Go to System Preferences. Then go to the Desktop icon and open it. Then drag the image into the well.
MAC OS9: Drag the image onto your desktop. Go to your Control Panel and select Appearance. Click 'set desktop' and choose your new desktop.