Topping-out ceremony at GoWest: Driving in the nail – the challenge was accepted (f.l.t.r.): Cora Cianfarini, CKSA Christoph Kohl Stadtplaner Architekten | Peter Kories, KOHA Bau | Kurt Zech, ZECH GROUP | Stephan Allner, DIE WOHNKOMPANIE Berlin | Heiko Klement, rw+ Architekten | Wolfrat Voigt, Gustav Zech Stiftung | Foto © Patrick Pagel