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Rammed Earth Pavilion Embracing Circular Pathways at Geothermal Caves

Authors:
Ismael Fernández, Alejandra Esteve, Matan Mayer
Rammed Earth Pavilion Embracing Circular Pathways at Geothermal Caves

Project in-detail

Rammed earth walls and circular pathways create a seamless connection between visitors and the geothermal caves, enhancing the exploration experience while promoting sustainability and environmental awareness.
5 key facts about this project
01
Rammed earth walls provide natural thermal regulation.
02
Circular pathways enhance visitor engagement with the landscape.
03
The design draws inspiration from local geological features.
04
Geothermal heating and cooling systems are integrated for efficiency.
05
Copper cladding connects the pavilion to regional architectural traditions.

The Grojtagja caves in northern Iceland are a captivating feature of the landscape, combining geological significance with natural beauty. The design of the visitor pavilion aims to enhance the experience of exploring this unique site while managing the challenges posed by growing tourism. By creating a space that acts as a connection between the open landscape and the caves, the design encourages exploration and interaction with the environment.

Design Concept

The design focuses on establishing a conversation between the building and the natural fissures that define the area. Circular paths guide visitors through the site, leading them to different viewpoints of the caves and the surrounding landscape. This layout offers visitors both public and private experiences, allowing for varying levels of engagement while exploring the unique geological features.

Functionality and Structure

Inside the pavilion, the atmosphere is calm and simple. The design avoids unnecessary details, letting visitors connect directly with the surroundings. The overall shape of the building resembles a modern dolmen, providing a structure that feels at home in its natural environment. This form invites contemplation and a deeper appreciation of the caves and their history.

Materials and Sustainability

Sustainability is a key focus. The design uses rammed earth for the outer walls, which helps provide thermal regulation through geothermal pipes that facilitate efficient heating and cooling. A concrete top belt supported by vertical steel ties gives the building strength, suitable for the harsh Icelandic weather. Mineral wool insulation enhances energy performance, while timber trusses in the roof structure support both function and aesthetic appeal. The copper sheet roof cladding connects with local traditions and complements the overall design.

Attention to Detail

The circular pathways encourage visitors to take their time. As they walk through the pavilion, they experience a journey that allows them to connect with the geological features of the Grojtagja caves. Every design element contributes to this immersive experience, transforming an ordinary visit into an opportunity for reflection and appreciation of nature and history.

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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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