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Once the largest coal mine in Europe, the Zollverein complex in Essen, Germany, has undergone a remarkable transformation over the past twenty-five years. What was once a landscape of abandoned industrial facilities is now a laboratory of contemporary architecture, featuring works by Rem Koolhaas, Norman Foster, and SANAA. Their interventions bridge the site’s industrial past with its imagined future. Spanning 100 hectares, the UNESCO World Heritage site has become a global model of adaptive reuse, redefining what it means to preserve industrial heritage. Within this context stands the Ruhr Museum and its enigmatic art repository, the Schaudepot. Located in the complex’s former salt factory, the museum impresses not only with its collection but also with its architecture, which transforms a 1960s industrial building into a vibrant cultural venue.

Because of its historical and architectural relevance, the project is featured in the 2025 edition of Open House Essen, under the theme “Future Heritage.” The initiative explores which spaces might shape our future architectural legacy and asks pressing questions: What should we preserve? What should we adapt? And how can we design a future that is both livable and fair?

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Videos

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All materials come from somewhere, embedded in a chain of extraction, supply, production, and disposal that, depending on its scale, leaves more or less significant marks on the environment. In architecture, we usually approach this trajectory through the lens of materials' circularity, considering how they can re-enter production cycles rather than become waste. Yet, broadening our view to unexpected places reveals parallel systems where by-products from one industry become resources for another. This approach has found fertile ground in organic waste transformed into biomaterials, with one of the most recent examples being the work of Fahrenheit Works. Through their installation, "From the Tagus to the Tile", they repurpose oyster shells initially discarded by food systems to create a reinterpretation of Lisbon's iconic tiles.

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Videos

Between August 19 and 20, 2025, thousands of spectators watched as one of Sweden's largest wooden buildings was lifted onto beams and wheeled across town. The Kiruna Church, constructed between 1909 and 1912, was designed to echo the form of a Sámi hut in Sweden's far northern region, within the Arctic Circle. The building was designed by architect Gustaf Wickman, who served as the church's architect at the time, and combines elements of Gothic Revival with an Art Nouveau altar. The building, one of the city's main tourist attractions, was moved to a new location between the cemetery and the new city center to prevent damage caused by the expansion of the local mine.

How do nature and landscape dialogue within spaces designed for children? How are architecture and urban design capable of shaping natural atmospheres that integrate practices of play, participation, and exploration? From participatory projects that involve children in the design process to built environments that incorporate furniture adapted to their needs, the conception of spaces for childhood entails the creation of places for encounter, learning, and coexistence. At times, these spaces are able to strengthen the relationships between interiors and exteriors, connecting their users with nature and the surrounding environment. Depending on their cultures, customs, and histories of attachment to place, several contemporary projects deploy tools and strategies that integrate architecture, nature, and pedagogy to form broad experiences of learning, play, and discovery.

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