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Rammed Earth Tower Tapping into Geothermal Energy with Views of Icelandic Landscape

Authors:
Hidde Manders, Karolina Duda, Tipp Bongers
Rammed Earth Tower Tapping into Geothermal Energy with Views of Icelandic Landscape
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Featuring a monolithic form crafted from rammed earth and integrating geothermal energy, the tower provides sweeping views of the Northern Icelandic landscape while serving as an observation point for visitors.
5 key facts about this project
01
Constructed using stabilized rammed earth, ensuring durability and thermal efficiency.
02
Incorporates basalt aggregate to connect the structure to its geological surroundings.
03
Features a central void that transforms visitor perception as they ascend.
04
Utilizes geothermal energy to power the building's lighting systems.
05
The café offers framed views, enhancing the visitor experience of the landscape.

The Rift is an observation tower located at the border of two continents, specifically between the Grotaja caves in Northern Iceland. The design aims to strengthen the connection between its structure and the surrounding landscape. With an emphasis on interacting with nature, the building allows visitors to traverse through varied spaces that enhance their experience of the environment.

Spatial Experience

The design of The Rift emphasizes the movement from closed spaces to wide, open views. Visitors ascend through a central void that alters their perception as they climb higher. This experience of transition—from darkness to expansive vistas—allows individuals to appreciate the beauty of the Northern Icelandic landscape while offering a distinct experience with each level.

Functional Organization

The layout consists of key functional areas, including an information point, storage, toilets, and a café. These spaces are organized to provide a smooth and engaging visitor experience. The café features a bar and a seating area, carefully positioned to showcase framed views of the outside. This arrangement supports both interaction and leisure, enhancing the overall functionality of the space.

Materiality

The tower primarily uses stabilized rammed earth combined with basalt aggregate. This choice connects the structure to its geological surroundings and helps it withstand the local climate. Cement is incorporated to improve the durability of the rammed earth, ensuring the building remains intact over time. Additionally, reclaimed wooden panels from the structure's formwork are used as flooring in the caves, emphasizing resource efficiency.

The staircase consists of steel framing and offers access to the elevated viewing platform. This feature guides visitors upwards, culminating in a wide view that highlights the unique terrain of Iceland. At the top, visitors can fully engage with the spectacular landscape that surrounds them.

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

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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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