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Geothermal Greenhouse Featuring Etfe Canopy and Sustainable Steel Structure Enhancing Local Dining Experience

Authors:
Matteo Gawlak, Riccardo Gialloreto, Micol Zucchini
Geothermal Greenhouse Featuring Etfe Canopy and Sustainable Steel Structure Enhancing Local Dining Experience
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Constructed with an ETFE canopy and a durable steel framework, this greenhouse restaurant utilizes geothermal energy for sustainable food production while serving as a dynamic community dining space in Iceland's unique landscape.
5 key facts about this project
01
Constructed with an ETFE canopy that enhances light diffusion and thermal performance.
02
Integrates geothermal heating to maintain a sustainable temperature year-round.
03
Utilizes a steel frame to minimize site disturbance while ensuring structural integrity.
04
Includes hydroponic gardens that support onsite food production and promote sustainability.
05
Designed with a dynamic form that mirrors the surrounding volcanic landscape.

The "circUS: Iceland Greenhouse Restaurant" is an architectural project designed to create a functional dining experience seamlessly integrated with local food production. Located in Iceland, the project harnesses the unique geological characteristics of the region, including volcanic and geothermal resources. The design melds aesthetics and practicality while prioritizing sustainability, creating a structure that supports both ecological responsibility and community engagement.

Innovative Use of Materiality and Form

One of the project’s distinguishing features is its use of materials that promote sustainability and energy efficiency. The main structure combines an ETFE membrane and glass to maximize natural light while maintaining thermal performance. This combination reduces energy consumption by optimizing the greenhouse effect within the building. The steel framework provides structural support with minimal environmental impact. Concrete forms the foundation, ensuring stability while enabling the incorporation of green elements.

The building's design reflects organic forms, mimicking the surrounding landscape. This connection to the environment is evident in its undulating shape, which aids in thermal regulation and enhances visual interaction with nature. Large glass panels allow diners to engage with the outdoor environment while enjoying their meals, fostering an appreciation for the local ecosystem.

Integrated Community and Food Production Spaces

The project emphasizes community interaction through its spatial organization. It features distinct areas including a dining hall, multi-purpose event spaces, and integrated gardens. The dining hall serves as the focal point, enriched by the proximity to the greenhouse elements that provide fresh produce directly to the kitchen. This direct connection from production to consumption is a significant aspect of the restaurant’s concept.

The design also accommodates flexible usage of space, allowing for various community-oriented functions such as educational workshops and local markets. This adaptability enables the project to serve as a hub for sustainable practices, fostering awareness and collaboration among local residents.

Sustainable Practices and Performance

A critical aspect of the "circUS" project is its commitment to sustainability through the integration of geothermal heating systems and water-efficient practices. Utilizing local resources reduces the ecological footprint while providing a comfortable indoor environment year-round. The architectural choices reflect a comprehensive understanding of the climatic conditions, ensuring that the building maintains energy efficiency throughout its lifecycle.

In summary, the "circUS: Iceland Greenhouse Restaurant" stands out for its thoughtful integration of architectural design, materiality, and functional community spaces. The project not only addresses dining needs but also enhances local food production, education, and ecological awareness.

To gain deeper insights into the architectural plans, sections, and detailed design elements of this impactful project, we invite you to explore the project presentation further.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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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.

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