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Translucent Polycarbonate Sphere Featured in Sustainable Timber Retreat

Authors:
Haruki Suzuki, Takahiro Nishijima, Junko Kuramata
Translucent Polycarbonate Sphere Featured in Sustainable Timber Retreat
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A spherical structure clad in translucent polycarbonate harmonizes with its forest setting, providing a sustainable retreat designed for communal living and introspection in nature.
5 key facts about this project
01
Constructed with a spherical form to maximize natural light and minimize environmental impact.
02
Clad in translucent polycarbonate to create a warm glow at night while preserving privacy.
03
Prefabricated components enable rapid assembly, reducing site disruption.
04
Adjustable legs ensure stability on uneven terrain, enhancing versatility in various locations.
05
An outdoor platform extends functionality, promoting communal activities in a natural setting.

## Overview

The Amber Cabin is situated in a forested area near the Baltic Sea, inspired by the natural and cultural significance of amber stones found in the region. Designed as a functional living space for trekkers, the cabin aims to minimize environmental impact while providing a retreat that harmonizes with its surroundings.

## Spatial Configuration

The cabin features a distinct layout that encompasses a 10-meter square outdoor platform, which serves as a communal gathering space complete with a fireplace for cooking. The primary living area is a 4-meter diameter spherical space designed to accommodate multiple hammocks, fostering social interaction among occupants. This organization supports various activities—resting, cooking, and socializing—while maintaining a strong affinity with the natural landscape.

## Materiality and Environment

The construction employs a combination of modern and traditional materials that reflect the project's commitment to sustainability. Structural plywood forms the internal framework for strength and lightness, while translucent amber-colored polycarbonate panels provide thermal insulation and ample natural light. Stainless steel is utilized at connection joints to enhance durability, and wood features prominently in the platform and other structural elements to ensure a warm, organic aesthetic. Furthermore, the design includes a solar panel to promote energy self-sufficiency and reduce reliance on external resources, exemplifying the project's eco-friendly ethos.

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

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

`
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.

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Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
Prize Monetary award
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