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Basalt Pillars and Glass Facades at a Volcano Gateway

Authors:
Sebastian Mitterer, Clemens Pletzer, Laura Ebenbichler, Ben Wieser
Basalt Pillars and Glass Facades at a Volcano Gateway
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Constructed with basalt pillars and expansive glass façades, the visitor center provides a sheltered entry point to the hiking routes leading to Hverfjall, merging functionality with the rugged landscape.
5 key facts about this project
01
Constructed with basalt pillars that reflect local geology.
02
Utilizes cross-laminated timber for structural integrity.
03
Features a spiral layout that guides visitor movement.
04
Incorporates large glass façades for panoramic views.
05
Designed to blend seamlessly with the volcanic landscape.

The design is located at the base of Hverfjall, a volcano in Iceland. It serves as a gateway for hikers heading toward the summit. The building is set thoughtfully within the landscape, allowing it to connect naturally with its surroundings. The design concept focuses on blending the structure with the environment using a spiral form that directs visitors through the space.

Exterior Form

The building features an exterior defined by geometric shapes arranged in a spiral. This form is not only visually appealing but also practical. Pathways marked with small panels guide visitors either upward towards the volcano or downward into the facility. This circular layout promotes exploration and captures the symmetrical nature of Hverfjall. Large glass surfaces on the façade provide wide views while reflecting the natural landscape, further integrating the building with its surroundings.

Interior Space

Upon entering, visitors find a coffee shop and an exhibition area. This design encourages a variety of experiences and allows for social interaction. The coffee shop has both open seating near the glass and private areas for relaxation. This arrangement fosters a natural flow among visitors and enhances their overall experience within the space.

Material Use

The design incorporates basalt pillars that reflect the geological features of the region. These pillars not only serve as structural supports but also link the building aesthetically to the volcanic landscape. Cross-laminated timber is used throughout the interior, offering strength and a warm atmosphere. The floor is made of lava concrete, chosen for its effectiveness in managing temperature, which suits the local climate.

Spatial Interaction

The layout encourages interaction with the surroundings. The spiral structure facilitates continuous movement through the interior, providing varied viewpoints. This design creates an immersive environment for visitors, allowing them to appreciate the natural beauty of the area while enjoying the shelter offered by the building.

Natural light plays an important role within the space. The large glass surfaces allow sunlight to filter in, creating a warm and inviting atmosphere. As the light changes throughout the day, it adds depth to the experience within the building, enhancing the connection to the Icelandic landscape outside.

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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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