A distinctive method of painting 'in the grand manner' and popular during the Victorian era, it was a type of panoramic painting exhibited on a cylindrical platform. A viewer standing in the middle of the cylinder has a 360 degree view of the painting; the goal is to make the viewer feel as though they are standing in the midst of an event, usually dramatic and historical, or a famous place. A particularly famous cyclorama of that time was the "Battle of Gettysburg" by Henri Philippoteaux. Source: wikipedia, Felix Emmanuel Philippoteaux