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Corten Steel Walls Framing Tectonic Futures with Geothermal Engagement

Authors:
Lars Kumpfert, Laurids Trapp, Philip Schneider
Corten Steel Walls Framing Tectonic Futures with Geothermal Engagement
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The interplay of corten steel walls guides visitors through a tectonic landscape, immersing them in the geothermal wonders of Iceland while providing a space for relaxation and education.
5 key facts about this project
01
Corten steel walls create a visual connection to the surrounding landscape.
02
The circular pathway guides visitors through the tectonic divide.
03
Names of tectonic plates are etched into the walls for educational insight.
04
The structure is elevated on steel pile foundations to minimize site impact.
05
Energy needs are met through geothermal sources from the nearby power plant.

"Between Plates" is located at the Grjótagjá caves, where the fissure between the tectonic plates of Europe and America creates a unique geological landscape. The design focuses on enhancing the visitor experience while exploring the geothermal pools and surrounding nature. A circular pathway weaves through the site, leading to a café and waiting area that invite interaction with both the architecture and the environment.

Circular Pathway
The centerpiece of the design is a circular pathway that guides visitors through a series of engaging experiences. As they walk, they are encouraged to explore while staying connected to the stunning natural surroundings. The café, combined with the waiting area, offers a place for visitors to pause and enjoy the views, enriching their overall experience as they take in the geological features surrounding them.

Corten Steel Walls
Two large corten steel walls are key elements of the design. These walls extend from the fissure's sidewalls, creating a strong visual presence in the landscape. They not only provide structural support but also frame views, enhancing the way visitors perceive the environment. As people walk through the space between the walls, they are led to focus on the geological features beyond. The names of the tectonic plates are etched into the walls, adding an educational aspect to the visit.

Sustainability and Minimal Impact
Sustainability is an important consideration in the design. Both the observation tower and the café are raised on steel pile foundations, which help minimize their impact on the natural landscape. The use of recycled corten steel is a practical choice that aligns with environmentally friendly practices. Additionally, energy for the café is intended to come from geothermal sources provided by the nearby Krafla power plant, highlighting a commitment to sustainable energy use.


One notable design feature is the wave pattern incorporated into the base of each corten steel wall. This detail adds visual interest while also contributing to the structural integrity of the walls. Overall, the design emphasizes a connection to the geological context, encouraging visitors to appreciate the natural processes that shape this landscape.

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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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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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