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Corten Bridge over Tectonic Divide Enhancing Geological Awareness

Authors:
Stephen Melville, Camille Chevrier
Corten Bridge over Tectonic Divide Enhancing Geological Awareness
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Suspended above a tectonic break, a Corten bridge offers a unique vantage point for visitors to engage with Iceland's geological landscape, serving as both an observatory and a pathway for exploration.
5 key facts about this project
01
Corten materials are chosen for their ability to blend with the local geology and weather over time.
02
The bridge acts as both a physical connection and an observational platform over a tectonic break.
03
Visitors experience an immersive descent into the cave, engaging directly with the geological environment.
04
Pathways throughout the site are designed to encourage exploration and highlight specific geological features.
05
The project incorporates an information point to educate visitors about the local geological history and processes.

Bilanalina is located within Grjotagja's Cave in Iceland, a site known for its significant geological features, including the boundary between the North American and Eurasian tectonic plates. The project is designed to create a connection between the land and its visitors, fostering an experience that highlights the natural landscape and its geological history. The aim is to engage people in understanding the forces that shape the earth while offering a space for reflection and exploration.

Site Design and Functionality

The design includes key elements such as an information point, café, restrooms, viewpoints, and pathways that guide visitors through the cave and surrounding areas. This organized layout enhances interaction with the landscape, allowing visitors to immerse themselves in the geological context. Each area serves a purpose, facilitating an informative and enjoyable experience.



Bridge Tower and Observational Experience

A central feature is the bridge tower, which connects the two tectonic plates while serving as a viewing platform. This structure is intended to provide visitors with a space for contemplation. As people ascend, they gain a broader perspective of their surroundings. The highest point features a mesh platform that extends over the tectonic break, offering a direct observation point of the geological movements below.



Materiality and Environmental Integration

Corten is the main material used in this design, selected for its durability and its ability to blend with the rugged environment. The natural patina of weathering steel allows it to fit into the landscape while symbolizing the forces at work beneath the surface. Elements made from Corten rise from the ground, reinforcing the connection between visitors and the earth’s movements.



Pathways and Visitor Journey

A network of pathways leads visitors through diverse experiences, starting with a descent into the cave. This immersive journey encourages direct engagement with the geological phenomena of the site. As visitors ascend toward the café and resting areas, they are provided the opportunity to reflect on their surroundings and experiences.



At the peak of the bridge, the mesh platform allows for an unobstructed view of the tectonic break. From here, visitors can directly observe the geological processes that have shaped the landscape over time. This detail offers a clear connection between the structure and the dynamic environment, inviting contemplation of the earth's ongoing transformations.

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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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Competition organisers

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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