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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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Kingspan MICROHOME 2026: Building Less to Create More

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Competition organisers

The Kingspan MICROHOME 2026 competition invites architects and designers worldwide to rethink small-scale living by creating an off-grid, modular micro dwelling under 25 m². Now in its 11th edition, the contest emphasizes sustainable, innovative, and human-centered design that demonstrates how compact living can have a big impact.

With a €100,000 prize fund, entries will be evaluated for originality, efficiency, and their response to contemporary environmental and social challenges. The competition is open to everyone, with submissions allowed individually or in teams of up to four. Registration closes on 30 September 2026, and winners will be announced on 15 December 2026.

By celebrating creativity within strict limits, MICROHOME 2026 continues to push the boundaries of compact architecture and sustainable living.

MICROHOME 2026

Design a new concept of small-scale home and share a prize fund of 100,000€

100,000 € Prize Fund / Kingpsan Edition #11 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 September 2026

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