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Spherical Accommodations Crafted from Basalt and Timber Integrating Geothermal Features

Authors:
Ing-tse Chen, Yu cheng Wu, Yi-hsuan Tu, Yaw-shyan Tsai
Spherical Accommodations Crafted from Basalt and Timber Integrating Geothermal Features

Project in-detail

Crafted from local basalt and timber, the design employs spherical forms to harmonize with the Icelandic landscape while incorporating geothermal features, providing flexible lodging options for visitors.
5 key facts about this project
01
Spherical units allow for reconfigurable living arrangements.
02
Local basalt stone facade integrates with the surrounding terrain.
03
Geothermal features provide sustainable heating and relaxation areas.
04
Phase change materials enhance thermal efficiency in guest accommodations.
05
The design draws inspiration from Norse mythology, particularly Yggdrasill.

## Overview

Mímisbrunnur is situated near Lake Mývatn in Iceland and focuses on the integration of natural elements within its architectural framework. The design emphasizes the interplay between the region's volcanic landscape and traditional Nordic aesthetics. Key components of the project include movable spherical units, referred to as "The Balls," and permanent structures such as The Rock and The Hills, all tailored to enhance the user experience in this unique geographical context.

## Spatial Strategy

The architectural approach prioritizes harmony with the surrounding environment, utilizing forms that resonate with the site's rolling hills and volcanic terrain. The spherical accommodations reflect the land's natural contours, while also drawing from Norse mythology—specifically the symbolism of Yggdrasill, the world tree—to articulate a connection with nature. The design includes flexible living spaces that adapt to the landscape, maximizing functionality while offering panoramic views and abundant natural light.

## Material and Sustainability

The project employs various materials that reinforce both aesthetic appeal and environmental responsibility. Locally sourced basalt stone serves as the primary cladding material for The Rock, establishing a visual and physical connection to the geological environment. Large segments of insulating glazing enhance light intake, while phase change materials (PCM) in the spherical units promote energy efficiency. The sustainability strategy leverages geothermal energy for heating, incorporates on-site waste treatment systems, and utilizes water management practices optimized for the region's natural springs. These strategies collectively ensure minimal environmental impact while fostering a sense of place and permanence.

Key architectural elements include the flexible living units, designed to accommodate varying guest needs, and permanent structures that facilitate community interaction through designated gathering spaces. The combination of innovative architectural forms with a dedication to sustainable practices defines the overall character of the project.

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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

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