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Modular Platforms and Cross Laminated Timber Amidst the Tectonic Divide

Authors:
Piotr Dziewierz, Filip Sierak, Maria Zimnoch
Modular Platforms and Cross Laminated Timber Amidst the Tectonic Divide
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Set against the dramatic backdrop of the tectonic divide, the structure utilizes modular platforms and Cross Laminated Timber to create a unique observation tower and visitor center that enhance the connection between people and the rugged Icelandic landscape.
5 key facts about this project
01
Modular platforms replace traditional stairs to create a unique climbing experience.
02
The design draws inspiration from the local cave formations for its vertical structure.
03
Cross Laminated Timber panels provide both structural strength and warmth.
04
A green roof integrates the visitor center with the surrounding landscape.
05
The skylight at the top fosters a direct connection with the changing sky.

The design is located at the crossroads of the Grjótagjá caves in Iceland, a site characterized by the meeting of the European and American continental plates. The building serves two main purposes: an observation tower and a visitor center. The overall concept merges practical functions with a design responsive to the surrounding landscape. Two distinct forms are utilized in the design—a vertical solid for views and a horizontal solid for shelter. This balance creates a cohesive connection between the two structures and their environment.

Vertical Solid

The vertical solid serves as an observation tower, taking cues from the nearby cave formations. Visitors ascend through a series of modular platforms rather than conventional stairs. This design invites people to engage more fully with the space. As they climb, they encounter a skylight at the top, allowing natural light to flood the interior while providing opportunities to appreciate the views of the landscape.

Horizontal Solid

In contrast, the horizontal solid functions as the visitor center and café. It combines traditional Icelandic architectural features with local materials like stone and a green roof. This part of the building prioritizes comfort and practicality, offering a welcoming environment for those traveling through the area. Its design provides a resting place that connects to the natural surroundings while maintaining a low profile.

Environmental Integration

Sustainability plays a significant role in the overall design. The building incorporates various eco-friendly solutions, including water collection systems and zoned heating methods. These features aim to optimize energy use and reduce environmental impact. The design reflects a commitment to responsible construction approaches that resonate with the local climate and ecology.

Materiality

Cross Laminated Timber (CLT) panels are used throughout the structure, contributing to both strength and visual warmth. This choice supports good thermal performance and fire resistance. The natural properties of the wood create a welcoming interior, allowing the building to resonate with its natural setting. The careful selection of materials enhances the connection between the architectural forms and the landscape they inhabit.

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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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