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Tectonic Spaces Shaped by Earth Plaster and Straw for Visitor Engagement

Authors:
Adrien Poullain, Khoa Dang phan
Tectonic Spaces Shaped by Earth Plaster and Straw for Visitor Engagement

Project in-detail

Constructed with earth plaster and straw, the building embodies the geological interplay of North America and Europe while providing a visitor center that enhances ecological awareness and engagement with Iceland’s volcanic landscape.
5 key facts about this project
01
Reflects the tectonic divide between North America and Europe through its architectural form.
02
Utilizes straw for insulation and structure, emphasizing local and renewable resources.
03
Features a geothermal heating system sourced from local underground springs.
04
Incorporates natural ventilation, relying on convection rather than mechanical systems.
05
Designed pathways minimize disruption to the surrounding volcanic landscape.

The Iceland Cave Tower is located in the volcanic landscape of Iceland, designed to promote ecological tourism. The building reflects the geological divide between North America and Europe, embodying this concept within its structure. By engaging visitors with the natural environment, the design supports sustainable practices while creating a cohesive and informative experience.

Architectural Concept

The design of the Iceland Cave Tower is rooted in its geological context. It visually represents the crack in the landscape, inviting exploration and interaction with the earth’s history. This symbolic element enhances the visitor experience, encouraging individuals to connect with the natural world. The building form offers a way to appreciate the unique features of the site while respecting the ecological context.

Functional Layout

The layout is carefully organized to enhance visitor flow. Upon arrival, guests enter a sequence of spaces that lead up to an observation platform. The design includes a café, visitor center, exhibition room, and restrooms, ensuring that all visitor needs are met. Each area is connected, allowing for social interaction as well as opportunities for personal reflection. The gradual reveal of the landscape as one moves through these spaces adds to the sense of discovery.

Material Selection

Material choice plays a crucial role in the design. Straw is used for thermal insulation and structural elements, highlighting a commitment to renewable resources. Stone serves as exterior cladding, providing a connection to the local geography. Wood is incorporated into the flooring and other structural components, adding warmth and texture. Soil is used in interior finishes, keeping the design closely linked to the surrounding environment.

Sustainability Features

The building incorporates several features that reflect a focus on sustainability. Geothermal heating utilizes natural springs from beneath the site, allowing for efficient energy use. Natural ventilation is designed to rely on warm air convection, minimizing the need for mechanical systems. Additionally, photovoltaic panels are discreetly integrated within the parking area to provide renewable energy.

At the top of the tower, the observation platform offers expansive views of the landscape, creating a connection to the natural beauty surrounding the site. Visitors can observe the striking geological features, immersing themselves in the unique environment that inspired the project.

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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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