Paper marbling is an art form that may well date back more than a thousand years. The technique involves creating paint patterns on top of a container of water and transferring those patterns to paper, usually paper of high quality. The result is stunning, unique designs that can be used for covering leather-bound books or simply as decorative art in its own right. At the very latest, it first appeared in 12th century Japan before spreading across Asia. In the 15th century, it had either made its way from East Asia or been re-invented independently in Turkey, where a new, more sophisticated version of the practice (called ebru) would gain popularity. This spread throughout the Islamic world and eventually reached England around the 17th century. There, marbling was used not just on books but also for wrapping gifts and lining drawers and shelves. Want to see the process for yourself? We've compiled some videos of paper marbling.