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Greenhouse Café with Geothermal Heating and Sustainable Design

Authors:
Trae Schwenneker, Corey Stremcha, Lauren Perry, Ben Martinez
Greenhouse Café with Geothermal Heating and Sustainable Design
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Incorporating geothermal heating and utilizing skylights, the café seamlessly integrates greenhouses that provide fresh, local produce, creating a unique dining experience rooted in sustainability.
5 key facts about this project
01
Incorporates a geothermal heating system sourced from nearby hot springs.
02
Features greenhouses designed as passive solar chimneys for natural ventilation.
03
Rainwater collected from the café roof is used for greenhouse irrigation.
04
Skylights are strategically placed to enhance natural light within the dining area.
05
The elongated café design maximizes views of the surrounding landscape.

The Vogafjós Greenhouse Restaurant is located near the Mývatn Nature Baths in Iceland, where it brings together the experiences of dining and agriculture. The design focuses on connecting food production with the act of eating. The structure features a long café that makes the most of its scenic views and allows plenty of sunlight to enter the space, enhancing the atmosphere for visitors.

Architectural Concept

The design integrates greenhouses into the dining area, creating a connection that is both functional and visual. The café is positioned to face Southeast, giving diners a view of the landscape while maximizing light exposure. The roof slopes back towards the greenhouses, drawing attention to the agricultural aspect of the project and letting patrons observe food as it grows.

Sustainability Features

Sustainability plays a key role in the design. It uses a geothermal heating system that draws energy from the earth and nearby hot springs. This method efficiently keeps the restaurant warm and reduces the need for other energy sources. The greenhouses also act as passive solar chimneys. This means they allow hot air to rise and escape through vents. Such features contribute to a comfortable temperature in the dining area while being environmentally friendly.

Water Management

An effective rainwater management system is also part of the design. The café's roof is crafted to collect rainwater, which is then directed into underground storage. This water is used to irrigate the greenhouses, promoting efficient use of natural resources. It also ensures that the plants receive necessary moisture, supporting the local food production efforts.

Experiential Design Elements

The dining space includes skylights that fill the interior with natural light. This choice creates a warm and welcoming atmosphere for guests. It also encourages diners to pay attention to the greenhouses nearby, where they can see food being grown. Each greenhouse is carefully arranged to ensure that all plants receive enough sunlight. This enhances not only the productivity of the produce but also the overall experience for diners, who can appreciate the link between growing and eating.

The design brings together the café and greenhouses in a way that highlights the importance of local food sources. The visual connections throughout the space foster a sense of appreciation for the natural environment and the process of food production.

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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.

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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