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LocationDüsseldorf
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ProjectNew construction of two office buildings with shared underground parking
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ProcedureRestricted competition, 1st prize
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ClientDeutsche Rückversicherung;
VöV Rück -
Architect of recordCaspar Schmitz-Morkramer
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BIM-Management, Project Controlling, DGNBDrees & Sommer, Cologne
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Landscape Architecturestudio grüngrau, Düsseldorf
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Structural engineeringSchüßler-Plan, Ingenieurgesellschaft, Cologne
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Technical building equipmentZWP Ingenieur-AG, Cologne
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Fire ProtectionCorall Ingenieure, Meerbusch
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Planning und construction period2021–2025
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Service phases1–5
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Gross floor areaBuilding 1 ca. 22,100 m²; Building 2 ca. 17,700 m²
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CertificationsDGNB Gold (intended); WiredScore Gold (intended)
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Visualizationsbloomimages
Hansapark, located in the Heerdt district of Düsseldorf, is undergoing a significant transformation. Until 1978, this site was home to the Oberkassel cast steel works, which produced ship propellers. After years of dormancy, it is now being redeveloped into a business park. In 2021, Deutsche Rück spearheaded this new chapter of use, engaging us to revise an existing plan, including facades and interiors, following our successful design competition win. Initially, the plan was for a single building, but our competition entry introduced the concept of the Twin Cubes. Deutsche Rück and VöV Rück will occupy one of these twin buildings, with some spaces leased out, while ÖRAG Rechtsschutzversicherung acquired the other. The design features an ensemble of one five-storey and one six-storey office building, slightly offset from the orthogonal, which is better integrated into the urban space thanks to the finer grain.
“When it became clear that our client would only be using 40% of the space on the 10,000 m² plot itself, we came up with the idea of making two buildings out of one – the TWIN CUBES.”
The Twin Cubes serve as a model for reshaping the Hansapark area. Their slight rotational adjustment not only creates a verdant perimeter around the premises but also enhances the corner created by the expansion of Willstätterstrasse. Set back from the street, the buildings enhance the forecourt’s spatial depth, transforming it into a welcoming public space adorned with islands of greenery, lush trees, and green seating elements. Each building has a dedicated entrance area, one double-storey and the other single-storey. A shared underground parking lies beneath, while a strategic gap between the buildings promotes connectivity, rather than division, through a thoughtfully designed open space.
The inner courtyards of the Twin Cubes boast terraces and green spaces, offering serene spots for relaxation and engagement with nature. The buildings are crowned with roof gardens, further enriching the urban greenery. Tasked by Deutsche Rück, we designed the interiors to provide modern, adaptable office floors engineered to meet the evolving demands of employees and tenants. The floor plans revolve around the inner courtyard and include three circulation cores, accommodating various configurations, from private offices to open-plan layouts. Energy efficiency in the Twin Cubes is achieved through a smart blend of active and passive measures. A standout feature is the brass-colored photovoltaic elements embedded into the light-colored natural stone facade. These narrow glass modules not only harmonize with the buildings’ elegant aesthetic but, together with additional photovoltaic installations on the roofs, secure long-term high energy yields. The systems for heating and cooling leverage geothermal energy and heat pumps, eliminating the reliance on fossil fuels.
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Caspar Schmitz-Morkramer
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Holm Bethge
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Vanessa Frank
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Simon-Martin Schultze
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Marcus Melsa
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Daniel Behnke
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Beate Bischofberger
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Sebastian Deweranda
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Nastaran Eidani
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Ayse Elmas
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Eike Heidelberg
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Ilse Kampers
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Christoph Lesch
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Jule Rosenbaum
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César Nieto Santamarina
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Carina Seckler
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Lars Scheerer
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Michel Schütten
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Hyongyong Song
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Israel Moreno Torres
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Lydia Walter