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Lava Stone Retreat with Subterranean Guestrooms and Geothermal Wellness

Author:
Masakaze Nishida
Lava Stone Retreat with Subterranean Guestrooms and Geothermal Wellness

Project in-detail

Set against the backdrop of Hverfjall Volcano, this retreat utilizes lava stone construction and geothermal energy to create subterranean guestrooms and wellness spaces dedicated to relaxation.
5 key facts about this project
01
The retreat is 1.5 meters below ground level, enhancing the connection to the earth.
02
Lava stone walls provide a natural aesthetic and thermal mass for energy efficiency.
03
Geothermal energy is utilized for heating pools and guest rooms via cascade utilization.
04
An unobstructed view of the Aurora Borealis is available from common areas.
05
Water features reflect the surrounding landscape, integrating visual and sensory experiences.

The project rises from the unique geological features of Iceland, located above the Mid-Atlantic Ridge, an area known for its rich geothermal activity. It aims to make use of geothermal energy, which has played a significant role in Icelandic culture since the time of the first settlers who relied on natural hot springs for cooking and bathing. With a focus on sustainability, the facility combines guest accommodations, wellness features, and communal spaces, all while embracing the surrounding landscape.

Geothermal Utilization

The design incorporates principles of cascade utilization, allowing geothermal energy to serve several functions simultaneously. Hot water extracted from the earth is used not just for heating guest rooms but also for warming pools and supporting agricultural activities. This multi-use approach underscores a commitment to environmental responsibility and provides a framework for future developments in similar geothermal regions.

Spatial Configuration

Guest rooms are placed in the basement, set 1.5 meters below ground level. This choice creates an environment that feels safe and serene. The lava stone walls enhance this experience, echoing the textures of the Icelandic landscape outdoors. They connect the occupants to the earth and highlight the natural features that define the region.

Natural Integration

The eastern facade features large openings that bring in natural light and views of the sky. This design invites the outside in and creates opportunities for observation and reflection. The water surface extends towards Hverfjall Volcano, linking the building visually to its natural surroundings and blurring the lines between man-made and natural elements.

Communal Spaces

Attention to communal areas is evident throughout the design. These spaces facilitate social interaction among guests while also providing quiet areas for relaxation. The layout promotes a peaceful atmosphere, aligning with the tranquil qualities found in Iceland's landscapes.

The play of light and the presence of water throughout the facility create a calming environment. Visitors are drawn into an experience that connects them to both the geothermal heritage and the stunning natural beauty of Iceland.

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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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