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Embracing Geological Formations with Rock and Gabion Walls in a Thermal Springs Retreat

Authors:
Justin Watts, Lewis Johnson
Embracing Geological Formations with Rock and Gabion Walls in a Thermal Springs Retreat

Project in-detail

Constructed with locally sourced rock and gabion walls, the guest house integrates seamlessly into the volcanic landscape, providing visitors with a unique thermal springs experience while preserving the natural topography.
5 key facts about this project
01
Constructed using local rock and gabion walls to enhance integration with the volcanic landscape.
02
Designed with a central spine that symbolizes the geological formations beneath it.
03
Features individual guest pods that promote both privacy and communal interaction.
04
Incorporates a green roof that merges with the existing ground cover for ecological benefits.
05
Utilizes a heat pump system to optimize energy efficiency through natural thermal sources.

The Icelandic Thermal Springs Guest House is located in the Northern Volcanic Rift Zone of Iceland, specifically between the Þeistareykir and Krafla rift zones along the Mid-Atlantic Ridge. Designed for visitors seeking accommodation, the structure respects the unique geological and climatic qualities of its surroundings. The design emphasizes a connection between the indoor environment and the natural landscape, with a focus on sustainability and community interaction.

Primary Structural Elements

A central spine serves as the main organizing feature of the building. This spine reflects the geological layers beneath the surface and guides movement across the site. It connects individual guest pods with shared spaces, allowing for easy circulation within the structure. A visually distinct secondary axis runs parallel, marked by a vivid blue line, inspired by glacial rivers and the colors of the Aurora Borealis. This element enriches the visual character of the building, making it a unique landmark.

Integration with Landscape

The site strategy emphasizes the relationship between the building and the natural terrain. The rear volume of the guest house is set into the hillside, which helps reduce its visual impact and blend it into the landscape. A green roof adds to this integration by merging with the surrounding ground cover, thereby reinforcing the connection to the environment while enhancing the ecological footprint of the design.

Sustainability Features

Sustainability is a critical aspect of the design approach. The excavation needed for the communal hot tub is repurposed; the rock that is removed becomes part of gabion walls and pathways. This practice minimizes waste and contributes to the functional and aesthetic qualities of the site. The focus on reusing materials reflects a commitment to environmental responsibility.

Energy and Light Management

The project incorporates a heat pump system that utilizes both thermal mass and volcanic ground heat for efficient energy use. This system ensures that hot water distribution is optimized, reducing energy waste. Additionally, the design includes recessed glazing and overhangs to properly manage sunlight, creating a comfortable atmosphere indoors while improving overall energy performance.

The guest pods feature wide windows that provide views of the surrounding landscape, allowing natural light to fill the spaces. This design choice not only enhances the interior experience but also strengthens the connection between the occupants and the captivating Icelandic scenery.

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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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