> The Möbius II tower was purchased in 2021 by the Belgian government for use by its domestic spy agency, the Sûreté de l’État, for €217 million from Immobel, Belgium’s largest listed real estate company. After the splashy acquisition, however, the building’s sleek, all-glass design failed to meet the spy agency’s basic security requirements. And as renovations were deemed too expensive, Belgium’s spies were kept down the road at their old offices...