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Floating Roofs and Greenery: a Greenhouse Gallery in Mývatn

Authors:
Daryl Venpin, Mingtong Zhuang
Floating Roofs and Greenery: a Greenhouse Gallery in Mývatn
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With a floating roof mirroring the surrounding landscape and integrated herb planters enhancing the dining experience, the greenhouse gallery promotes sustainability while serving as a restaurant in Mývatn.
5 key facts about this project
01
The greenhouse gallery is positioned directly within the dining area.
02
The design incorporates herb planters between tables for guest interaction.
03
A floating roof reflects the contours of the surrounding landscape.
04
Natural light is optimized through polycarbonate and glass paneling.
05
Geothermal heating is integrated to support crop growth in the greenhouse.

The PRISM Greenhouse Restaurant is situated on the hilly terrain of Mývatn, Iceland. It serves both as a dining space and an educational center focused on sustainability and local agriculture. The design integrates the landscape, creating a connection between the building and its natural surroundings. At the core of the structure is a greenhouse gallery that highlights the benefits of local produce and indoor farming practices, aiming to involve visitors in the conversation around sustainability.

Design Concept

The greenhouse functions as a central element within the overall design. It encourages interaction with the source of food and promotes an understanding of local food systems. By placing the greenhouse at the heart of the restaurant, the design fosters a unique atmosphere where diners can observe the growing process while enjoying their meals.

Spatial Arrangement

The structure adapts to the sloping terrain with careful consideration of the site. Portions of the building slide apart to create an outdoor terrace that allows natural light into the space while providing views of the surrounding area. Dining is arranged on glass platforms, creating a sensation of floating above the soft landscape. This arrangement enhances the overall dining experience and deepens the connection to the natural environment.

Materials and Sustainability

The materials used in the restaurant reflect the design’s focus on sustainability. The roof is made from polycarbonate and glass panels, maximizing natural light while framing views of Hverfjall volcano and Mývatn Nature Baths. Locally sourced timber cladding adds warmth, and prefabricated I-beams support the elevated dining areas. Sustainable features are woven throughout the design, including systems for managing rainwater and geothermal heating for the greenhouse.

Design Detail

A notable feature of the PRISM Greenhouse Restaurant is the inclusion of herb planters positioned between dining tables. This allows guests to pick fresh ingredients as they dine, promoting a hands-on connection to the food. It serves not only to enhance the dining experience but also to encourage a better understanding of food production, making the visit both enjoyable and educational.

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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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100,000€ Prize / 2025 ideas COMPETITION
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