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Embodied Sustainability Through Engineered Timber and Natural Materials in a Visitor Center Design

Authors:
Jens Van Raemdonck, Giel Heymans
Embodied Sustainability Through Engineered Timber and Natural Materials in a Visitor Center Design
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Constructed with engineered wood and integrated into the volcanic landscape, the visitor center seamlessly blends natural materials with sustainable design to enhance access to Iceland's geothermal features.
5 key facts about this project
01
Constructed with a focus on geothermal energy, the building features a water recirculation system for sustainability.
02
The use of jute burlap for insulation enhances both performance and tactile quality in the design.
03
A spiral staircase offers a unique ascent while providing panoramic views of the surrounding landscape.
04
Modular construction techniques allow for flexibility in design and adaptability to the site’s geological conditions.
05
The structure's footprint aligns with the natural fault line to minimize environmental impact and preserve the landscape.

The Grjótagjá Cave Tower is a thoughtfully designed architectural project located near Grjótagjá Lake in Iceland. It serves as a visitor center that offers access to a notable geothermal area within a unique geological landscape. The project aims to create an engaging user experience while integrating comfortably with the surrounding environment.

The architectural design emphasizes critical relationships between the built environment and natural surroundings. The structure’s modular form follows the geological contours of the land, promoting harmonious interaction and maintaining the visual rhythm of the landscape. This facility incorporates a variety of public and private spaces, allowing visitors to engage meaningfully with the site while enjoying views of the dramatic terrain.

Sustainability is at the forefront of the design. A range of materials has been selected for their functionality and aesthetic appeal. The use of engineered wood for the structural framework provides both strength and a natural appearance. Jute burlap is utilized for insulation and surface treatment, offering a textural quality that complements the natural environment. Corrugated metal sheets form the roof, ensuring durability against the harsh climate, while glass panels deliver ample natural light and unobstructed views of the exterior.

The layout of the Grjótagjá Cave Tower supports a variety of visitor functions, including a café, information area, and locker rooms. The provision of an observation tower serves not only as a lookout point but also adds a unique vertical element to the design. This staircase spirals upwards, providing an immersive ascent that culminates in panoramic views, thereby enhancing the visitor's experience of the landscape.

The project stands apart from many others in its meticulous integration with the site’s geology and ecology. Unlike typical visitor centers, the Grjótagjá Cave Tower embodies a deep respect for its surroundings. The design minimizes environmental impacts through thoughtful site selection and construction techniques, such as utilizing a flexible foundation that accommodates local geological conditions.

This project exemplifies contemporary architecture's potential to foster a connection with nature. The adaptability of the structure allows it to serve diverse functions while also emphasizing sustainability and respect for the environment. For further insights into the architectural plans, sections, designs, and ideas that underpin this project, readers are encouraged to explore the detailed presentation of the Grjótagjá Cave Tower.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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Design the next suburban home for the USA

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