RAG-Stiftung und RAG AG Zollverein - A circular building

The building consistently follows the principles of the circular economy in both its construction and material selection. The load-bearing structure remains exposed and unclad, enabling pure material separation and future reuse. Concrete, aluminum, and glass are used selectively, with the aluminum façade not only referencing the surrounding architectural language but also being fully recyclable.

The interior design equally reflects durability and adaptability: all materials are chosen for easy disassembly. Standardized grid dimensions and modular systems allow flexible adaptation to future requirements, laying the foundation for a long service life and potential repurposing — a key aspect of circularity.

The architectural concept is complemented by a sustainable energy strategy. Geothermal energy and concrete core activation efficiently regulate the building’s temperature, while a photovoltaic system on the roof provides additional renewable energy and helps reduce operating costs.

By combining a robust, adaptable structure with careful material selection and renewable energy use, the new building not only meets current sustainability standards but also creates a future-proof, circular building that integrates harmoniously into the site's cultural heritage.