The art installations of Roman Signer. Roman Signer (born 1938 in Appenzell, Switzerland) is principally a visual artist who works in sculpture, art installations photography, and video. Signer's work has grown out of, and has affinities with both land art and performance art, but they are not typically representative of either category. Signer’s "action sculptures" involve setting up, carrying out, and recording "experiments" or events that bear aesthetic results. Day-to-day objects such as buc