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Crystalline Structures Embracing Geothermal Energy in Iceland's Wilderness

Authors:
Takanao Todo, Yusuke Hattori, Saeko Aizawa
Crystalline Structures Embracing Geothermal Energy in Iceland's Wilderness
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Emerging from the Icelandic landscape, crystalline forms house geothermal energy systems, creating a visitor center that seamlessly integrates intimate bathing experiences with the region's natural and cultural heritage.
5 key facts about this project
01
Crystalline structures mimic natural ice formations in the landscape.
02
Geothermal energy systems provide sustainable heating and bathing.
03
Visitor center integrates with both public and private cave spaces.
04
Illumination design minimizes artificial light, highlighting natural phenomena.
05
Paths are designed with permeable materials to protect the terrain.

The Ginnungagap SAGA project is located in northern Iceland, around 70 km from Akureyri, in a landscape rich with geological history and cultural significance. The design captures the meeting of elemental forces—frost and heat—inspired by the region’s ancient myths. As a visitor center, it serves to connect guests with the natural environment while introducing them to the unique characteristics of Icelandic wilderness.

Site Context and Conceptual Framework

The project draws upon the ancient rift of Ginnungagap, representing a space where creation occurs. Crystalline forms rise from the land, echoing the area's geological history. The structure encourages exploration, inviting visitors to experience the narratives that the land holds. There is a clear connection between the architecture and the surrounding environment, enhancing the understanding of Iceland's past.

Visitor Experience and Functional Zoning

The design divides into distinct public and private areas, creating different experiences for visitors. The public section includes the Karlagja entrance, marked by an observatory that offers broad views of the landscape. This area hosts an exhibition space highlighting geothermal energy, showcasing the natural resources available in the region. Smaller buildings accommodate visitor services, including a café and restrooms, ensuring comfort and accessibility.

Private Spaces and Personal Engagement

The Kvennagja cave provides opportunities for a more personal experience. Visitors can reserve times for bathing in private settings. The design includes areas for waiting and changing, enhancing comfort while respecting the cave's natural form. This focus on individual interaction encourages visitors to connect with the environment in a meaningful way.

Sustainable Design Strategies

Choosing materials and employing environmental strategies are essential in this design. The project features a curtain wall similar to those used in traditional Icelandic greenhouses, while private areas include an inner concrete layer that maximizes thermal efficiency. A binary electric generator captures geothermal energy, providing heat for bathing and other uses. Paths are created with granulated sand and permeable concrete to minimize disruption to the land while ensuring strength against frost damage.

Light and texture play a significant role in the overall design. Natural light is prioritized, reducing the need for artificial illumination throughout the site. The crystal-like structures glow softly at night, enhancing the connection between the built environment and the natural wonders that surround it.

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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.

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100,000€ Prize / 2025 ideas COMPETITION
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