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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

Project in-detail

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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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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