To mark the 25th anniversary of the fall of the Berlin Wall, he and his brother Christopher Bauder conceived and executed a public art installation called Lichtgrenze (Light Border). Using approximately 8,000 large balloons, each one mounted on its own self-powered light post, the Bauder brothers lit a 15.3-kilometer stretch of the former border between East and West Berlin. On November 9th, 2014, spectators helped release the balloons.