Nüssli, the construction services provider based in Hüttwilen, celebrated the topping-out ceremony for the extension to the Mack Pyramid in Monheim am Rhein on 8 March 2026, in the presence of the building’s namesake, Heinz Mack. With this extension, the company – which specialises in temporary event structures – is realising an “architecturally ambitious construction and cultural project”, writes Nüssli in a press release.
Thanks to the installation of a load-bearing steel structure shortly before the topping-out ceremony, the double pyramid is already a prominent feature of the townscape. “The structure is characterised by sophisticated geometry, high design standards and complex structural engineering,” the statement says. According to the city, the building is intended to provide a culturally significant architectural landmark. Exhibition spaces for contemporary art are to be created.
According to the press release, the Thurgau-based company is contributing its experience with complex special-purpose structures such as pavilion architecture, exhibition design, as well as façade designs, sculptures and exhibits. “At various world exhibitions, we have learnt to turn extraordinary forms and complex structures into reality. It is precisely this expertise that is now being put to full use in the Mack Pyramid,” says Udo Baader, Head of Project Management Special Projects. The opening is scheduled for June 2027.
Alongside the progress of the construction, the day also focused on the pyramid’s namesake, Heinz Mack. The sculptor was among the visitors, celebrating his 95th birthday. “Despite all the plans, I can’t quite picture it yet. The main thing is that the light remains,” he is quoted as saying. The light is part of his artwork inside the building, the press release states.
