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Carbon-Proofed Concrete Structure Embracing Natural Light in a Volcanic Landscape

Authors:
Michael Anselm, Marten Buns
Carbon-Proofed Concrete Structure Embracing Natural Light in a Volcanic Landscape

Project in-detail

The use of carbon-proofed concrete walls and vast perforated surfaces creates an atmosphere of shifting light, enhancing the visitor experience while providing educational insights in a center dedicated to the geological wonders of the Grjotagja caves.
5 key facts about this project
01
The building features a twisting form that enhances visibility from various distances.
02
Carbon-proofed concrete walls allow for significant material reduction without compromising design integrity.
03
Spiral platforms provide multi-level exhibition spaces showcasing local geological features.
04
Perforated surfaces create dynamic light patterns, mimicking effects found in natural caves.
05
Movable stone tablets facilitate interactive engagement with changing light and space.

The design focused on the Grjotagja caves is located in a dramatic landscape of volcanic formations, boiling mud, and the Blue Lake. It aims to serve as both a visitor center and an observation point. The concept is built on connecting the architecture to the natural environment, enhancing the experience for visitors while allowing them to engage meaningfully with the geological features of the area.

Form and Landscape Integration

The layout is characterized by a twisting shape that draws attention from various distances, establishing a presence within the landscape. This form complements the surrounding natural contours, creating a link between the building and the earth. It acts as a bridge, connecting crevices while highlighting the geological formations that define the area.

Functional Layout

Inside, the design focuses on practicality and visitation. There are spiral platforms that function as exhibition spaces, offering information about both local geology and cultural significance. Essential facilities, such as waiting areas, an information office, and a café, have been included to improve visitor comfort and navigation through the space. The layout is arranged to invite exploration and curiosity.

Material Usage and Sustainability

Concrete walls feature carbon proofing techniques that reduce material use by about 50%. This method results in thinner walls, which visually relate to the landscape. By placing importance on sustainability, the approach reflects an awareness of environmental issues and strives to lessen impact during construction.

Natural Light and Atmosphere

Natural light significantly influences the interior environment. Perforated surfaces allow light to filter in, creating changing patterns throughout the day. These effects resonate with the natural light found in nearby caves. Furthermore, movable stone tablets in the design enhance interaction with light. This design element leads to a lively atmosphere that encourages visitors to engage with the geological features and the space itself.

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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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