In 2003, two obsolete high-rise apartment buildings from the 1970s at the Harter Plateau near Linz were pulled down. As a replacement, a new housing area was built right nearby. It was separated from a busy road by its own row of shops. Klopf came up with an artistic design for the new 300-metre-long building in the form of two lines of lights that extended along the entire length of the building and also continued over the bridge above the road.

(Double Flash, 2002; String neon lights, length: 390 m; housing development Living in the Park, Leonding, near Linz; architecture: Hubert Riess / Graz)