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Curved Concrete Plates over Fault Line with Geothermal Hearth for Visitor Engagement

Authors:
Andy Kikta, Jonathan Toonkel
Curved Concrete Plates over Fault Line with Geothermal Hearth for Visitor Engagement
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Two curved concrete plates, positioned above a tectonic fault line, create an interactive space that combines geological awareness with visitor functions such as observation and exploration.
5 key facts about this project
01
Two curved building plates are anchored directly above a tectonic fault line.
02
The design minimizes ground contact to accommodate geological movements.
03
Visitor pathways are aligned with the north-south axis of the fault.
04
A geothermally heated hearth serves as a focal point in the gathering space.
05
Rainwater is collected through a green roof for sustainable use.

The Ridgeline is set in the dramatic landscape of the Mid-Atlantic Ridge, where the North American and Eurasian tectonic plates meet. The design aims to create an engaging experience for visitors by connecting them to the geological features of the area. The concept centers around two curved building plates that mirror the movement of the fault line, bringing together architecture and nature in a meaningful way.

Structural Composition

Two curved building plates form the core of the design, referencing the area's tectonic activity and providing support for the structure. These plates sit directly above the fault line, allowing visitors to explore the geological forces that shape the landscape. A stairway is suspended between the plates, which minimizes contact with the ground and provides a pathway for movement through the space.

Spatial Organization

The layout supports easy movement for visitors, connecting them to observation points and geological sites. The stairway follows a north-south orientation along the fault line, guiding people to viewpoints that highlight the beautiful scenery. Openings in the building plates create framed views, enhancing the sense of connection between the inside and outside.

Functional Spaces

The enclosed area includes practical facilities such as a field office, café, restrooms, and storage. An information desk is placed outside to serve as the café counter, allowing for straightforward interaction. A covered outdoor space invites social gatherings, featuring a geothermally heated hearth that serves as a cozy focal point.

Sustainability Features

An important aspect of the design is its approach to sustainability. The green roof collects rainwater, which is stored in an underground cistern for use in irrigation and restrooms. This technique not only fits well with the local ecology but also nods to traditional Icelandic building practices. The structure is organized into simple bays, supported by concrete piers that give the appearance of floating forms, making the architecture feel connected to the geology.

A notable design detail is the reduced structural contact with the ground near the fault line. This careful consideration helps preserve the environmental integrity of the site while encouraging exploration of both the geological and architectural aspects of the project.

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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.

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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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