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Gabion Walls and Geothermal Heating in a Sustainable Greenhouse Restaurant

Authors:
Ruben Everett, Ash Fridd, Alex Doibani, Wilber Ilett
Gabion Walls and Geothermal Heating in a Sustainable Greenhouse Restaurant

Project in-detail

Constructed with Gabion walls and utilizing geothermal heating, the design leverages the unique Icelandic landscape to create an integrated greenhouse and restaurant that fosters both environmental sustainability and community interaction.
5 key facts about this project
01
Located in Iceland, the project utilizes local geothermal springs for heating.
02
Gabion walls enhance thermal mass and integrate with the natural landscape.
03
The design features a cantilevered dining area that extends over the greenhouse.
04
Rainwater harvesting systems are incorporated to support greenhouse operations.
05
The layout encourages public engagement through open, accessible spaces.

The Thermal Greenhouse & Restaurant project is located in Iceland's distinctive landscape, designed to serve as both a greenhouse and a dining establishment. The concept is derived from the term 'Hrgg,' which translates to ridge, reflecting the intention to align the building closely with the natural landforms. This thoughtful approach allows the structure to fit into its environment, promoting a connection between people and nature.

Design Concept

The focus on lightness and transparency defines the overall design, representing the sensitive nature of the plants that will grow within the greenhouse. The layout encourages visitor engagement and smooth movement throughout the space. The greenhouse occupies the western section, linking with an entry area that invites interaction. The lobby design is open, accommodating individuals, families, and larger groups, guiding them toward the bar and restaurant on one side, while directing others to a multi-use hall on the opposite side.

Architectural Features

One of the notable elements is the spine wall that serves both structural and aesthetic functions. This wall generates a specific experience within the spaces, creating a visual link between the inside and outside environments. Strategically placed retaining walls form terraces, enhancing planting areas and adding visual complexity to the design.

Sustainability and Materials

The project emphasizes sustainability through the use of geothermal heating systems that draw on nearby geothermal springs to maintain suitable temperatures for the plants. Gabion walls made from stone and wire cages are utilized to provide thermal mass and reinforce the building's connection to natural materials. This approach demonstrates a dedication to reducing environmental impact by utilizing local resources and innovative techniques.

Interior and Water Management

The design includes a cantilevered dining space that extends over the lower growing areas, creating a connection between the interior and the surrounding landscape. Large windows and glazed sections provide ample natural light, enhancing the atmosphere in the restaurant and hall areas. Furthermore, water management strategies—such as a cistern for collecting rainwater or snowmelt—reduce reliance on outside water sources for the greenhouse's operations.

The integration of functional features in this project highlights the relationship between architecture and nature, resulting in a greenhouse and dining space that encourages interaction with the natural surroundings.

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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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