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Cantilevered Views Supported by Cross-Laminated Timber and Glulam in a Geological Landscape

Authors:
Kohsaku Mitsuhashi, Hideya Fukushima
Cantilevered Views Supported by Cross-Laminated Timber and Glulam in a Geological Landscape
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Elevated by a cantilevered structure of cross-laminated timber and glulam, the tower seamlessly integrates into its geological setting, providing an educational observation space that highlights the tectonic landscape of Iceland.
5 key facts about this project
01
Elevated observation spaces are created through cantilevered sections that extend over a geological fissure.
02
The structure utilizes cross-laminated timber panels for enhanced structural efficiency and sustainability.
03
Charred wooden shingles are employed for exterior cladding, promoting weather resistance and natural aesthetics.
04
A bent A-frame design allows for an optimal balance between stability and spatial experience.
05
The project fosters educational engagement by integrating geological information displays throughout its spaces.

The Iceland Cave Tower is an architectural project located in a unique geological setting, where the North American and Eurasian tectonic plates meet. This structure serves as a multipurpose observation tower designed to enhance visitor interaction with the surrounding landscape, while also providing educational opportunities about the geological significance of the site.

The design features a cantilevered staircase and a series of interconnected spaces that facilitate movement and exploration. The tower is constructed primarily from sustainable materials, including glulam, timber planks, and cross-laminated timber, all of which contribute to the building's aesthetic and structural integrity. The form expresses a connection to the geological context, reflecting the division between the tectonic plates in both function and appearance.

Unique Design Approaches

One significant aspect of the Iceland Cave Tower is its integration with the landscape. The building's elevations are engineered to mirror the contours of the land, ensuring minimal disruption to the natural environment. The use of cantilevered elements allows sections of the structure to extend over the fissure, creating unobstructed views of the surroundings and illustrating the tectonic activity that shapes the region. This approach emphasizes the dynamic relationship between architecture and geology.

Another aspect that sets this project apart is its focus on educational engagement. Designed to inspire curiosity about natural phenomena, the tower includes information displays and observation decks that encourage visitors to learn about tectonics, geology, and the area's ecological systems. The architectural design promotes a seamless flow of information and interaction, connecting guests to their environment in a meaningful way.

Functionality and Spatial Organization

The Iceland Cave Tower's design includes a well-considered spatial layout that caters to both individual visitors and group activities. Key components include a welcoming entrance area, a spacious waiting zone, and a café that serves refreshments. The suspended staircase not only provides access to observation platforms but also functions as a focal point within the design, drawing attention to the fissure below.

The observational areas are strategically located to offer expansive views of the landscape, maximizing the visual experience for visitors. The use of large windows and open spaces fosters a sense of connection with the surroundings, inviting guests to appreciate the natural beauty of Iceland.

For further insights into the architectural plans, sections, and overall design concepts of the Iceland Cave Tower, exploring the project presentation is recommended. Engage with the architectural designs to gain a comprehensive understanding of the intentions and innovations behind this notable project.

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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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