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Rammed Earth Structure Embracing Geothermal Features for a Wellness Retreat

Rammed Earth Structure Embracing Geothermal Features for a Wellness Retreat
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Crafted from rammed earth and designed to integrate seamlessly with geothermal features, the structure serves as a dedicated wellness retreat that fosters a deep connection with its natural surroundings.
5 key facts about this project
01
Crafted from locally sourced rammed earth, enhancing sustainability and thermal performance.
02
Geothermal heating integrated into the design for energy-efficient climate control.
03
Curvilinear structure harmonizes with the natural topography of the landscape.
04
Strategic use of glass provides unobstructed views of the Northern Lights.
05
Private treatment areas designed for immersive nature experiences, prioritizing user tranquility.

### Overview

Caldera: The Boiling Pot is located in a scenic Nordic region characterized by geothermal features. The design aims to create a harmonious relationship with the surrounding landscape, emphasizing relaxation and intimacy. The architecture draws inspiration from the elemental aspects of the sky, mountains, and craters, all influencing its form to establish a connection between visitors and the natural environment.

### Architectural Form and Spatial Organization

The building's design features flowing, organic shapes that reflect the sinuous lines of the terrain. Curvilinear forms are employed to foster tranquility, while the spatial arrangement is meticulously crafted to promote interaction among visitors. The public areas are thoughtfully articulated, enhancing circulation and enabling various visual and experiential connections between indoor and outdoor spaces. Key facilities, including a brewery, treatment rooms, and relaxation lounges, are integrated to create a comprehensive wellness environment.

### Material Selection and Sustainability

Materiality plays a crucial role in reinforcing the building's environmental ethos. Hand-shaped, rammed-earth walls provide warmth and a tactile quality, fostering a connection to the earth. Wood is utilized in structural elements and interior finishes to enhance warmth and invite nature indoors. Additionally, glass is strategically incorporated to maximize natural light and views, while metal and concrete are used in structural cores to ensure durability. This careful selection of materials supports sustainability while maintaining the architectural integrity of the design.

The architecture is designed to evoke a meditative experience by incorporating delicate connections between interior spaces and the surrounding landscape, thus inviting exploration and engagement.

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Buildner's Unbuilt Award 2026
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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.

The Next House: USA

Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 19 November 2025

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