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Lava Concrete and Birch Timber Blend in a Retreat Celebrating Natural Landscape

Authors:
Melanie Schubert, Sandi Johnen, Piervito Pirulli
Lava Concrete and Birch Timber Blend in a Retreat Celebrating Natural Landscape

Project in-detail

Constructed with lava concrete and light birch timber, the guesthouse merges seamlessly with the Icelandic landscape, offering a tranquil retreat that emphasizes sustainability and connection to nature.
5 key facts about this project
01
Constructed with lava concrete, reflecting the local geology.
02
Designed with angled walls in guest rooms to enhance views.
03
Features a pitched roof lantern for natural light and ventilation.
04
Includes a dedicated courtyard with a hot tub for relaxation.
05
Utilizes geothermal energy for sustainable heating and hot water.

The Thermal Springs Guest House is located on the east coast of Lake Myvatn in Iceland, a region known for its breathtaking natural features. The guesthouse serves as a retreat, offering a comfortable stay that complements the surrounding landscape. The design takes inspiration from the local environment, using elements from the area’s distinct colors and geological formations to create a structure that feels connected to its site. The goal is to provide an inviting space for visitors while respecting the beauty of nature.

Architectural Form

The building consists of two square, single-storey volumes. These volumes are arranged to establish a clear entrance and provide privacy for the guest rooms. The roof design features a sculptural shape that enhances the overall aesthetic and allows for expansive views of the nearby landscape. This layout facilitates a close relationship between the building and its surroundings, inviting occupants to engage with the natural beauty around them.

Spatial Organization

Inside, the guesthouse is organized to foster both community and privacy. A central living and dining area serves as a gathering space, while an external courtyard with a hot tub provides a place for relaxation. There are nine guest rooms situated along the South, West, and East sides of the building. Each room features a rectangular layout with an angled wall that creates a separation between the anteroom and the bedroom, allowing light to flow and offering views of the landscape beyond.

Material Choices

The choice of materials plays an essential role in the building's connection to its environment. Lava concrete is used for the external walls and roofs, providing a strong link to the local geology. This choice is not only practical but also visually coherent with the area's natural features. Inside, light birch timber is incorporated in the communal spaces, adding warmth and a comforting contrast to the cooler exterior tones.

Sustainability Strategies

Sustainability is integrated into the design to ensure an environmentally responsible operation. The guesthouse uses geothermal energy from ground heat pumps for heating and hot water. A mixed-mode ventilation system is also implemented to reduce energy use. Further efficiency is achieved through water-saving appliances and energy-efficient lighting. These strategies reflect a commitment to building responsibly within the natural landscape.

The communal living area features large windows that let in plenty of natural light, creating a welcoming atmosphere while providing stunning views of the 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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