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Corten Steel Observation Tower With Earth Integration in Icelandic Landscape

Authors:
Joren Jans, Ward Alblas, Max De veth
Corten Steel Observation Tower With Earth Integration in Icelandic Landscape

Project in-detail

Set against the rugged landscape of Iceland, the observation tower utilizes corten steel and rammed earth to create a structure that integrates seamlessly with its environment while offering visitors expansive views of the surrounding geological features.
5 key facts about this project
01
Rammed earth construction enhances sustainability and thermal mass.
02
Corten steel exterior provides weathering resistance and visual contrast.
03
The tower's routing gradually reveals expansive landscape views.
04
Multiple viewing platforms highlight unique geological landmarks.
05
Natural light filtered through perforations creates dynamic interior shadows.

The Grjótagjá Cave Tower sits near the Grjótagjá caves in Iceland, an area known for its remarkable natural baths. The design focuses on connecting visitors with the landscape, inviting exploration and appreciation of the surroundings. By blending into its environment, the structure serves both as a functional observation point and a visual marker that reflects the area's geological character.

Architectural Concept

The tower's design centers on the relationship between natural elements, particularly water, earth, and rocks. It is placed carefully within the landscape to enhance its surroundings. This approach encourages visitors to engage with the natural setting while establishing an architectural feature that prompts discovery and understanding.

Visitor Experience

As individuals ascend the tower, they follow a thoughtfully designed path that builds anticipation. The structure initially obscures views, creating a sense of mystery and curiosity. Gradually, the landscape unveils itself at different heights, culminating in an expansive view of Iceland's dramatic scenery at the top.

Light and Spatial Organization

Natural light plays an important role in the design. An opening at the top allows sunlight to filter in, mimicking the soft illumination found in caves. This feature enriches the experience, as light brightens the interior and creates shifting shadows throughout the space. The interplay of light and structure brings a dynamic quality to the tower.

Materiality

Rammed earth serves as the main material for the tower, demonstrating an eco-friendly approach to construction. Corten steel complements the earth and provides a contrasting texture that enhances the overall design. This choice ensures durability and blends the building with its rugged environment while supporting sustainable practices.

The tower features several viewing platforms that frame significant geological sites, including Hverfjall Volcano and Mývatn Lake. These elements encourage visitors to connect with the landscape and immerse themselves in the natural beauty surrounding them.

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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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