A one-of-a-kind cast-in-place structure is currently under way near Munich: the ESO Supernova Planetarium and Visitors Centre. The building’s cubature takes its cue from a narrow double star system. The architecture of the construction project is characterised by inclinations up to 23 degrees and demands the ultimate in artful engineering from contractor and formwork supplier. The city of Garching located 15 km north of Munich is the headquarters of the European Southern Observatory, the European Organisation for Astronomical Research in the Southern Hemisphere (ESO). This is where a new planetarium and visitors centre reminiscent of a narrow double star system is under construction. In this concept, one star transfers its mass to the other. As a result, the heavier star explodes in the form of a Supernova. It briefly shines as brightly as all the lights of the entire milky way’s stars together.