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Volcanic Ash and Etfe Enclosure Creating a Sustainable Greenhouse and Culinary Experience

Authors:
Nour Khwies, Alexander Hey
Volcanic Ash and Etfe Enclosure Creating a Sustainable Greenhouse and Culinary Experience
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Utilizing ETFE and volcanic ash, the design integrates a greenhouse and restaurant that fosters sustainability and enhances the culinary experience through direct engagement with agriculture.
5 key facts about this project
01
ETFE membrane provides thermal insulation while maximizing natural light in the facility.
02
Volcanic ash blocks are used not only for aesthetic reasons but also for their insulating properties.
03
The bent A-frame design allows for enhanced wind resistance, crucial in the local climate.
04
Rainwater collection systems are integrated to support greenhouse irrigation and reduce water usage.
05
The layout promotes visibility and interaction between the dining area and greenhouse cultivation zones.

The project "DEW on Volcanic Rocks" is a contemporary greenhouse and restaurant situated in the volcanic Krafla region of Iceland. The design emphasizes sustainability, a connection to the surrounding environment, and the theme of hydration as represented by dew. It serves multiple functions, including agricultural production and culinary experiences, while engaging visitors in the dynamics of nature and food sourcing.

The architectural form is developed to harmonize with the natural landscape, employing a layout that maximizes light and views while facilitating the flow of air. The building is divided into distinct areas: a greenhouse dedicated to cultivating diverse plants, a restaurant that provides diners with the experience of enjoying freshly sourced ingredients, and a multi-purpose hall designed for community engagement. This arrangement encourages interaction between patrons and the agricultural practices of the site.

Unique Design Approaches

The design adopts an innovative approach to sustainability by integrating natural processes in its structure. The use of ETFE as a transparent covering not only enhances daylighting but also contributes to energy efficiency. The aerodynamic roof shape effectively manages wind loads, essential in a region known for its harsh climate.

Incorporating local materials, such as volcanic ash for insulation, connects the project to its geographical context, providing both practical benefits and a sense of place. The building's layout allows for maximum exposure to sunlight, essential for greenhouse functionality, while strategically placed openings facilitate natural ventilation. Additionally, the use of rainwater collection systems showcases the commitment to resource efficiency, enabling irrigation of the greenhouse and reducing reliance on external water sources.

Community-Oriented Features

Accessibility and interaction are fundamental to the design, encouraging exploration of both the greenhouse and restaurant areas. The multi-level structure provides various vantage points for users, fostering an immersive experience of the natural surroundings. Clear sightlines from the dining area to the greenhouse enhance the relationship between food preparation and cultivation, promoting an understanding of the farm-to-table concept.

The architectural outcome reflects an integrated ecosystem that balances built form with natural elements, serving as a model for future architectural designs in similar environments. Visitors interested in exploring this project further should review architectural plans, sections, and designs to gain a deeper understanding of the innovative approaches and functional outcomes of the "DEW on Volcanic Rocks."

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The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

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100,000€ Prize / 2025 ideas COMPETITION
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