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Protruding Cones and Corrugated Metal in a Natural Landscape

Authors:
Natalie Tsui, Sandy Ng
Protruding Cones and Corrugated Metal in a Natural Landscape
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Protruding cones capture natural light while a corrugated metal roof provides durability in a building designed for observation and interaction within the unique landscape of Grjótagjá caves.
5 key facts about this project
01
Protruding cones enhance natural light entry and spatial dynamics.
02
A lightweight design allows for potential relocation as environmental conditions change.
03
Black steel structure develops a patina over time, adding visual character.
04
Timber deck extends to the fissure, inviting direct interaction with the landscape.
05
The independent public cave retains its natural conditions, fostering an authentic experience.

The design emerges from the landscape of the Grjótagjá caves, which are known for their hot springs and striking geological features. The setting informs a concept that focuses on adaptability and the connection between structures and their environment. A Tower serves as both an observation point and a multifunctional space, illustrating the relationship between human presence and the ever-changing natural world.

Structure and Form

At the center of the design is the Tower, a tent-like structure that combines elements of an observation tower with an elongated base. This form accommodates various functions while aligning with the North-South axis. Large windows frame views of Krafla to the North and Hverfjall to the South, allowing natural light to enter and connecting visitors with the landscape outside.

Visitor Engagement

Visitors begin their experience along modular walking paths that lead from the parking area to the entrance of the Tower. These pathways invite exploration and interaction with the surrounding nature. A timber deck extends toward the fissure, encouraging visitors to take in the geological features. Protruding cones incorporated into the design capture natural light, enhancing the spatial quality and creating an atmosphere of calm.

Material Considerations

The design uses lightweight elements, with a corrugated metal roof supported by a black steel structure. This choice of materials reflects the intention for adaptability, making it possible for the building to be relocated if necessary. Over time, the black steel will oxidize, adding a sense of texture that blends with the natural environment.

Spatial Dynamics

The Tower’s design reflects a cave-like experience through its layers, which creates unique and inviting spaces for visitors. The public cave remains separate from the main structure, ensuring that its natural conditions are preserved. This separation allows for a gentle interaction between the built environment and the geological landscape.

The design ultimately emphasizes a balance between architecture and nature. Light-filled spaces provide a connection to the surrounding area while recognizing the importance of preserving its fragile beauty.

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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 €
Eligibility Open to all
Final registration deadline 30 October 2025

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