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Geothermal Heating and Hydroponic Cultivation in a Sustainable Greenhouse Eatery

Author:
Maciej Galewski
Geothermal Heating and Hydroponic Cultivation in a Sustainable Greenhouse Eatery
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Utilizing geothermal heating and hydroponic cultivation, the structure serves as a sustainable greenhouse eatery that offers guests a unique dining experience intertwined with the cultivation of food in the stark beauty of Iceland's landscape.
5 key facts about this project
01
Utilizes geothermal energy for heating without greenhouse gas emissions.
02
Incorporates a closed water circuit system to recycle wastewater from plant growth.
03
Features an atrium ventilation design to maintain indoor air quality discreetly.
04
Integrates hydroponic cultivation to ensure year-round plant growth.
05
Positioned to enhance views of the Hvjerfall volcano and Lake Myvatn.

The Greenhouse Eatery at the Hill integrates restaurant functions within a greenhouse context, situated in the unique lunar landscape of northern Iceland. The design aims to connect with the environment, offering views of the Hvjerfall volcano and Lake Myvatn for its visitors. The concept merges culinary and botanical experiences, enabling guests to witness the growing process of the plants while they dine.

Design Concept

The structure serves as both a restaurant and a conservatory. This dual purpose enhances the dining experience and educates visitors about sustainable practices in food cultivation. The architecture focuses on energy efficiency and the use of local resources, providing a model for responsible design in challenging conditions.

Sustainability Measures

Energy sustainability is achieved through the use of Icelandic geothermal energy for heating, which helps reduce greenhouse gas emissions. The partially underground design takes advantage of thermal mass from the soil, acting as natural insulation that lowers energy consumption. These strategies showcase a dedication to sustainable practices throughout the building's design.

Water Management

Water management is an essential part of the design. Wastewater generated from the cultivation process is recycled, creating a closed water circuit that minimizes environmental impact. Additionally, the building collects melted snow from the heated roof, further enhancing its water efficiency during the harsh Icelandic winters.

Future Expansion Plans

Future plans look to expand the greenhouse areas, using the flat terrain of the hillside. This growth will preserve the views of both the Hvjerfall volcano and Lake Myvatn, ensuring that the new spaces remain connected to the landscape. This careful planning keeps the building in harmony with its surroundings, enhancing the original intent of the design.

Large glass panels allow sunlight to fill the interior, creating a bright and inviting atmosphere. The design reflects a thoughtful interaction between the building and its natural environment, encouraging visitors to enjoy both food and nature together.

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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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Competition organisers

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

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 October 2025

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