First installed in 2010 for the exhibition Mehrwert (added value) in front of the church in Quartier Leech, the fictitious construction sign marked the public garden with fruit trees next to the church as the building site of a spectacular architecture. In reference to Constantin Brancusi’s endless column, which points to the theoretical possibility of an endless growth of geometries, Markus Wilfling’s construction sign also indicates the dangers of speculative investors’ dreams. Does building always mean adding value?