Google Art Project for Chrome is a free Chrome extension which displays a beautiful artwork in every new Chrome tab.
There are thousands of pictures on offer covering everyone from Raphael and Rembrandt, to Monet and Gauguin, and contemporary works from street artists around the world.
To find out more about an image, hover your mouse cursor over the page and a description appears bottom-left. Click this to view details about the picture and discover more works by the same artist.
By default the extension changes its artwork daily, but it can also display a new image every time you open a new tab (right-click the Google Art Project icon and select Change Artwork > In every new tab).
Google Art Project has a little scope for improvement - right now it can crop some pictures to fit the background, for instance - but overall it's a great extension with access to a wide range of classic and more contemporary pictures.