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Geothermal Heated Copper Roof Integrating Visitor Experience in Icelandic Caves

Author:
Finn Crawford
Geothermal Heated Copper Roof Integrating Visitor Experience in Icelandic Caves
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The geothermal heated copper roof serves as both a structural element and a viewpoint, enhancing the visitor experience in the unique geological landscape of the Grjótagjá caves, providing spaces for exploration and engagement with the natural environment.
5 key facts about this project
01
Geothermal heating system prevents snow accumulation on the roof.
02
Patina copper roof integrates with the natural landscape.
03
Sunken café design encourages an intimate interaction with the rock face.
04
Visitor centre orientation provides seclusion from main pathways.
05
Observation tower draws visitors toward the continental fault lines.

The Grjótagjá Caves Regeneration Scheme is set in Iceland, aiming to improve visitor interactions while carefully considering the natural landscape. The project focuses on integrating new structures within the unique geological environment of the Grjótagjá caves. Through a series of planned stages, it seeks to create spaces that enhance the experience of visitors without overwhelming the surroundings.

Visitor Centre at Karlagjá

The first stage features the Karlagjá Visitor Centre, which includes a roof that visitors can walk on. This roof also provides shelter and allows for views of the landscape. Made from patina copper, the roof is designed to be heated from below, which helps to keep it clear of snow in colder months. Inside, a sunken café encourages a close connection to the rock wall, creating an intimate setting where visitors can appreciate the natural material up close.

Visitor Centre at Kvennagjá

The second stage introduces the Kvennagjá Visitor Centre, which enhances the bathing experience. This structure includes private bathrooms and showers, purposefully placed away from busy pathways. This orientation provides visitors with a peaceful environment, allowing them to enjoy the caves away from the crowd. The design fosters a sense of privacy, making the experience more personal.

Observation Tower

The final phase includes an observation tower located in the fields nearby, designed to lead visitors along pathways that explore the continental fault lines. This structure provides elevated views, allowing guests to take in the surrounding landscape. Designed with a light footprint, it blends well with the environment. The goal is to encourage exploration while highlighting the natural beauty of the area.

One notable feature of the overall design is the careful choice of materials. The patina copper roof of the Karlagjá Visitor Centre not only serves its functional purposes but also visually connects the building to the landscape, enhancing the relationship between the constructed elements and the natural surroundings.

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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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