St. Paul’s Cathedral in London is profoundly beautiful but it also holds within it an interesting surprise, which is the video installation inside the cathedral. The video installation called “Martyrs” consists of four video screens side by side, representing the four elements: earth, air, fire and water. The video is both mesmerizing and very moving to watch. It was created by Bob Viola and Kira Perov. To learn more, please view the video below.