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Rotatable Shelter with Polyester Roof Overlooking Volcanic Crater

Author:
Yang Song
Rotatable Shelter with Polyester Roof Overlooking Volcanic Crater
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The movable staircase and rotatable shelter, constructed with a polyester roof, provide visitors with dynamic access to breathtaking views of the volcanic crater, enhancing the experience of this unique landscape.
5 key facts about this project
01
Movable staircase allows 30-degree rotation for varied viewing heights.
02
Rotatable building structure enables 360-degree views of the volcanic crater.
03
Sheltered inner space designed for year-round visitor comfort.
04
Tensile roof inspired by traditional Viking turf house design.
05
Constructed with durable woven-coated polyester for weather resistance.

The site near the inner volcanic crater of Hverfjall in Iceland presents an opportunity for visitors to engage closely with the natural landscape. The design focuses on access and interaction, featuring a movable staircase and a building structure that can rotate. These features encourage exploration, allowing individuals to experience the unique geological formations from different perspectives.

Movable Staircase
A key element of the design is the staircase, which operates via a lever system. This staircase can rotate upwards and downwards, allowing visitors to reach varying heights and achieve a closer view of the crater. With a total rotation of 30 degrees, the staircase provides flexible viewing angles that enhance the experience of the landscape.

Rotatable Structure
The building includes a rotatable base made from circular and square steel frames. This design allows for a complete 360-degree rotation around a central point. By enabling movement, the structure encourages visitors to appreciate the different views of Hverfjall. The design effectively combines accessibility with an immersive experience of the surrounding natural beauty.

Sheltered Spaces
At the base of the building, there is an inner space that offers shelter from inclement weather. This feature is important in Iceland's often unpredictable climate. The sheltered area allows visitors to stay comfortable and protected, making it possible to enjoy the site throughout the year. The design demonstrates an understanding of how architecture can respond to environmental challenges.

Roof Design
Taking inspiration from traditional Viking turf houses, the roof consists of a tensile structure that connects with the landscape. This design respects historical techniques while utilizing modern methods to ensure durability. The materials used, such as woven-coated polyester and Poly Tetra Fluoroethylene (PTFE), provide resistance against weather conditions. The roof contributes to the overall aesthetic and functional harmony of the structure with its rugged surroundings.

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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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