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Geothermal Greenhouse Built into Bedrock with Panoramic Restaurant

Authors:
Yuka Takahashi, Yoshitaka Narita, Genki Kitazono, Horie Ken
Geothermal Greenhouse Built into Bedrock with Panoramic Restaurant
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Built into the bedrock, the greenhouse utilizes geothermal energy while offering panoramic views from the floating restaurant, seamlessly integrating agriculture with dining experiences in Iceland's midwinter landscape.
5 key facts about this project
01
Located at the top of a ridge for optimal views.
02
Integrates a geothermal heating system for efficient cultivation.
03
Designed with a circular form to capture sunlight from all angles.
04
Combines a restaurant with a greenhouse for an interactive dining experience.
05
Heavy use of bedrock in construction to enhance natural aesthetics.

Situated in the picturesque Mývatn region of Iceland, the design presents a thoughtful interaction between functionality and the natural surroundings. This structure enhances the user experience during the midwinter months while serving as a greenhouse, restaurant, and hall. The concept revolves around making the most of sunlight by utilizing the low-angle path of the sun and creating a relationship between the building and the landscape. The circular design encourages visitors to engage with both the architecture and the beauty of nature.

Functionality and Spatial Organization

The building is placed at the top of a ridge, allowing for impressive views of the environment. It is divided into four distinct areas: a floating restaurant, a pilotis ground floor, a greenhouse on the first basement level, and a hall located in the second basement. This vertical arrangement not only makes movement between spaces more efficient but also creates opportunities for interaction, enhancing the overall experience for guests.

Restaurant and User Engagement

The restaurant occupies the highest volume in the design, offering sweeping views of the Mývatn region. The space is warm and inviting, providing visitors with the choice of enjoying meals made from crops harvested on-site or using a shared kitchen for self-preparation. This combination promotes engagement, letting guests experience both the dining aspect and the agricultural elements of the design.

Greenhouse and Sustainable Practices

The greenhouse is integrated into the landscape, designed to reduce disturbances from outside elements. By sinking into the ground, it creates a stable environment for growth that effectively utilizes geothermal heat from the area. Transparency is key to the greenhouse’s function, allowing natural light to enter and support the plants' development.

Natural Elements in the Hall

In the second basement, the hall incorporates original bedrock, enhancing its connection to the surrounding landscape. Large openings in the roof allow natural light to stream in, establishing a clear relationship between the inside space and the sky. This thoughtful design element creates a peaceful atmosphere, allowing visitors to appreciate the landscape even while indoors.

The combination of light and shadow in various spaces changes throughout the day, adding depth to the experience and strengthening the bond between the architecture and its natural setting.

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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.

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

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
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Final registration deadline 30 October 2025

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