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Polyhedral Crystal Roof Constructed with Locally Sourced Timber and Geothermal Energy Utilization

Polyhedral Crystal Roof Constructed with Locally Sourced Timber and Geothermal Energy Utilization
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Constructed with a polyhedral crystal roof to optimize natural light and energy efficiency, this facility integrates geothermal resources and locally sourced materials to create a multifunctional space dedicated to wellness and community engagement.
5 key facts about this project
01
Polyhedral crystal roof structure enhances energy efficiency while maximizing natural light.
02
Central Trunk Frame design allows for flexible spatial configurations and multifunctional use.
03
Geothermal energy systems integrated for sustainable heating and cooling throughout the facility.
04
Local sourcing of materials minimizes environmental impact and supports regional craftsmanship.
05
Integrated gardens utilize geothermal heat for year-round cultivation of local flora.

## Overview

Located in Iceland, the "Tropism Phyllotaxis" project engages with the country's dynamic landscape of fire and ice, integrating architectural design with the natural environment. This undertaking emphasizes a comprehensive approach that incorporates local cultural elements, natural energy sources, and an intent to enhance community and wellness. Designed to facilitate interaction with the serene surroundings, the building is strategically positioned to provide optimal views of Lake Mývatn and other significant natural features.

### Material Selection and Sustainability

Material choices reflect both local conditions and ecological considerations, supporting a sustainable design ethos. Wood, chosen for structural framing and finishes, fosters warmth and aligns with environmentally responsible practices. Glass is employed across facades and roofs, maximizing natural light and maintaining visual connections to the landscape. Structural integrity is achieved through the use of steel in the truss systems, while thermal insulation materials, such as extruded polystyrene, enhance energy efficiency. Concrete provides foundational stability, complemented by metal roofing to withstand Iceland's environmental challenges.

### Spatial Configuration and Structural Design

The architectural composition features a polyhedral "Crystal Roof," characterized by angular forms that respond to solar and wind patterns. This innovative roof element not only optimizes sunlight penetration but also offers expansive panoramic views. Central to the design is the "Trunk Frame" system, which organizes functional spaces around a core area. This nucleus includes a brewery that reflects local food and drink culture, as well as gardens heated by geothermal energy, promoting year-round access to fresh produce. Therapeutic areas designed for wellness activities further leverage Iceland's natural healing attributes, reinforcing an overall commitment to community health and environmental integration.

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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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