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Structural Harmony of Aluminum and Glass in a Sustainable Mountain Retreat

Authors:
Hélène Lacombe, Sophie Lambotte, Delphine Lewandowski, Paul-antoine Lucas
Structural Harmony of Aluminum and Glass in a Sustainable Mountain Retreat
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Utilizing a modular structure of aluminum and extensive glass surfaces, the design integrates sustainable practices within a compact footprint, creating an efficient retreat for trekkers in Iceland's wilderness.
5 key facts about this project
01
Utilizes a modular design to optimize space and functionality within a compact footprint.
02
Incorporates a rainwater harvesting system to achieve self-sufficiency in water management.
03
Features extensive glass surfaces to enhance natural lighting and outdoor connectivity.
04
Constructed with a combination of aluminum and concrete to ensure durability and minimal maintenance.
05
Designed with communal spaces that foster social interaction among visitors.

### Project Overview

Located in the rugged landscapes of Iceland, the Lighthouse trekking cabin is designed as a sustainable and minimalistic structure aimed at providing accommodation for trekkers. The project emphasizes ecological harmony and responds to the unique geographical challenges of the area by targeting a compact footprint that maximizes habitable volume.

### Spatial Configuration

The cabin features a modular design consisting of six vertical stories, accommodating ten guests. Each floor is thoughtfully organized to fulfill specific functions, seamlessly integrating communal spaces with private retreats. This multi-layered spatial arrangement allows for both solitude and interaction, facilitating a versatile living experience tailored to the needs of its occupants. The rhythmic organization around structural columns further enhances the functionality of the space, promoting an efficient and user-friendly environment.

### Material and Sustainability Strategy

The choice of materials reflects a commitment to both structural integrity and ecological responsibility. The main structure incorporates aluminum for its lightweight and recyclable properties, while concrete serves as a stable base for the upper modular sections. Generous use of glass enhances the connection between the interior and the surrounding landscapes, providing visual continuity. Sustainable insulation materials are employed to optimize energy efficiency.

In terms of sustainability, the cabin integrates renewable energy sources, including a rapeseed oil co-generator and photovoltaic solar panels, supporting a self-sufficient energy system. Water management techniques, such as rainwater harvesting and an efficient purification system, are designed to minimize external dependency. Additionally, the project anticipates waste recycling solutions for both organic materials and wastewater, showcasing a holistic approach to environmental stewardship. The adaptable structure can also adjust to various terrains, ensuring stability while maintaining its minimal ecological footprint.

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MICROHOME 2026
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100,000 € Prize Fund / Kingpsan Edition #11
The Next House: USA
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20,000 USD Prize
Buildner's Unbuilt Award 2026
Buildner's Unbuilt Award 2026
100,000€ Prize / 2026

The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

The Next House: USA

Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
Prize Monetary award
Eligibility Open to all
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Celebrating your unbuilt architecture visions with a €100,000 prize

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