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Exploring Tectonic Tension Through Volcanic Rock and Glass Observation Structures

Authors:
Jiwon Jung, Hyung Chul Ko, Piyatida Wetcho
Exploring Tectonic Tension Through Volcanic Rock and Glass Observation Structures
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The integration of volcanic rock and expansive glass elements creates a spatial experience that reflects the tectonic tension of Iceland's geologic landscape, culminating in a functional observation tower that invites visitors to engage with the surrounding natural phenomena.
5 key facts about this project
01
The design replicates the geological fault line to create a unique circulation experience.
02
Local volcanic rock is utilized in gabion walls for aesthetic and structural integrity.
03
The observation tower incorporates glass panels for panoramic views and thermal protection.
04
The project emphasizes the connection between geology and human experience through interactive pathways.
05
Tension and resolution themes are explored through movement and spatial design.

Spenna is located along the geologic boundary between the Eurasian and North American tectonic plates in Iceland. The design reflects the concept of tension, showcasing the active geological processes of the area. By interpreting the fault line in architectural form, the project invites visitors to engage with the powerful natural forces that shape the landscape.

Circulation Path

The design incorporates a linear circulation path that deforms to recreate the experience of moving across geological boundaries. As visitors move through this space, they encounter a series of architectural fault lines that evoke the sensation of tension and release. The path balances moments of discovery with selective views of the landscape, encouraging exploration and curiosity.

Observation Tower

A key feature is the observation tower, which serves as a focal point for views of the geological fault line and its surroundings. This tower represents the culmination of geological processes and enables visitors to witness the effects of long-term tectonic activity. The form of the tower emphasizes the relationship between people and nature, particularly the themes of tension and resolution within the landscape.

Materiality

Local materials play a crucial role in the design, with gabion walls made from indigenous volcanic rock. These walls enhance the connection to the site and provide structural integrity, able to withstand the movements of the ground. In addition, cast-in-place concrete foundations and bearing walls support the architectural structure, offering durability while respecting the surrounding environment.

Design Details

The observation tower features strategically placed glass panels that provide thermal protection and clear views of the landscape. Gaps in the gabion walls allow natural light to enter, enriching the interior spaces and creating an engaging visitor experience. These thoughtful design details deepen the visitor's connection to the geological features, enhancing the understanding of the forces that shaped the land and allowing a unique perspective on the dynamic scenery.

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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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