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Volcanic Stone Structures with Compressed Grass Panels Enhancing Geothermal Wellness

Authors:
Baptiste Poiraud, Olga Arzul, Romain Poidevin
Volcanic Stone Structures with Compressed Grass Panels Enhancing Geothermal Wellness
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The use of volcanic stone and compressed grass panels merges with the geothermal landscape in a design that integrates hot springs and observation spaces, creating a unique destination for relaxation and exploration.
5 key facts about this project
01
Volcanic stone panels are used for thermal insulation and aesthetic coherence with the landscape.
02
Compressed grass panels enhance sustainability while providing natural insulation.
03
Large zenithal openings optimize natural light throughout the interior spaces.
04
An observation tower offers panoramic views of Iceland's unique geological features.
05
The building layout encourages seamless transitions between indoor and outdoor environments.

Allégorie is located in Iceland, a country known for its dramatic landscapes and geothermal activity. The design features a series of interconnected rooms that navigate between two natural caves filled with water. The layout invites visitors to engage with the surrounding environment while providing opportunities for relaxation. The overall concept reflects the contrast of fire and frost, highlighting the relationship between the man-made structure and nature.

Spatial Arrangement

The project layout consists of various spaces that rise along the rift, leading to an observation tower with views of the stunning Icelandic terrain. This vertical element serves as a focal point within the design. Visitors are encouraged to explore the different areas, promoting a rich experience while connecting them to the natural surroundings.

Natural Light Integration

At the core of the design is the use of large zenithal openings that bring in the unique northern light. These openings enhance the interior atmosphere, creating a warm and inviting environment. The light plays across the surfaces, adding depth and dimension to the spaces and fostering a sense of connection with the outdoors.

Material Selection

The materials chosen for the project are linked to the local geology. Volcanic stone panels, compressed grass panels, and charcoal wood facing are used throughout. These materials not only improve thermal insulation but also resonate with the landscape's colors and textures. The result is a cohesive design that feels inherently tied to its setting.

A key design detail can be found in the observation tower, which features an angular form that reflects the surrounding cliffs. This element deepens the relationship between the structure and its environment, allowing visitors to appreciate the breathtaking vistas of Iceland from a new angle. The thoughtful combination of space, light, and materials creates an inviting atmosphere that respects the natural beauty of the site.

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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

Open architecture competitions

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