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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 Next House: USA — A Global Call to Reimagine the American Suburb

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Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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