City-Nord stands as one of Europe's most ambitious urban development projects from the 1960s. Chief Planning Director Werner Hebebrand conceived the master plan to preserve the historic city center's character and function while accommodating the spatial demands of expanding corporations seeking prominent headquarters. Today, this distinctive ensemble of landmark structures stands under heritage protection, nestled within expansive green spaces and elevated pedestrian zones—and continues to evolve. Against this complex urban backdrop, the new office building on Kapstadtring by Berlin-based Barkow Leibinger strikes a careful balance: its staggered massing establishes a distinct architectural identity while remaining in conversation with its neighbors. Independent yet contextual. There is no hierarchy of front and back, only equally compelling, layered facades. The outer envelope draws from the practical vocabulary of office design, yet each building volume receives its own subtle, carefully considered character. The design earned first prize in a collaborative design competition in 2017. The composition of three parallel, offset slabs—stepping in height from 30 to 40 to 60 meters—delivers multiple benefits: a refined massing strategy, protected entry courtyards at ground level, and seamless internal connectivity across horizontal and vertical planes. Standing opposite the heritage-listed former Claudius Peters AG office building—which has been urban-design reinforced while remaining visually prominent in key sightlines—this new focal point clearly defines the Kapstadtring address. The building provides 1,300 workstations for Signal Iduna, consolidated from multiple previous locations. Its two- and three-bay floor structure accommodates diverse office strategies and ways of working. In partnership with Sassan Philipp Haschemi & Associates, Signal Iduna's corporate design and art advisors, a comprehensive interior concept was developed. Every office space opens onto external balconies positioned within the "folds" between building sections—offering all occupants respite, informal work settings, and spontaneous exchange. The central lobby connects to contemporary conference facilities, training rooms, a cafeteria, and a full-service restaurant with outdoor seating. The landscape design by Capatti Staubach honors City Nord's defining character—its expanses of lawn and plane trees—through restrained yet dignified interventions.

www.barkowleibinger.com

Photos:
Simon Menges
www.simonmenges.com
Nino Tugushishi

(Published in CUBE Hamburg 04|25)