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Geothermal Energy and Rainwater Systems Shaping A Modern Visitor Experience

Authors:
Edward Onida, Elina Arzumanian
Geothermal Energy and Rainwater Systems Shaping A Modern Visitor Experience

Project in-detail

Leveraging geothermal energy and a rainwater recovery system, the design integrates a spiky form inspired by local rock formations to house educational exhibits and an observation deck focused on Iceland's geological and historical narratives.
5 key facts about this project
01
Sowilo rune-inspired design reflects local cultural significance.
02
Features a geothermal energy system utilizing nearby hot springs.
03
Incorporates a rainwater recovery system tailored for Iceland’s climate.
04
Multi-level layout offers thematic exhibits on geology and history.
05
Observation deck provides panoramic views of the surrounding landscape.

The Sowilo Tower is located in Iceland, designed to connect with the unique landscape and cultural history of the area. Drawing its name from the Sowilo rune, which stands for strength and light, it represents these themes throughout its structure. The tower features a distinct spiky shape that resembles the local rock formations, blending naturally into its surroundings. It serves as a venue for exhibitions and offers an observation deck, creating opportunities for visitors to learn about Iceland’s history and to appreciate its natural beauty.

Conceptual Foundation

The concept behind the Sowilo Tower is closely linked to the significance of the Sowilo rune, reflecting ideas of energy and illumination. As visitors move through the tower, they encounter different displays related to the geological features of Iceland, local flora and fauna, and the historical context of the nearby Grjótagjá cave. The arrangement of spaces is intentional, inviting exploration and interaction with the informative content presented across various levels of the tower.

Spatial Organization

The layout of the tower consists of five floors, each serving a particular theme connected to Iceland's environment. The ground floor houses an information center and café, providing a welcoming start for visitors. The first floor highlights the history of Grjótagjá, while the second focuses on its geological aspects. The third and fourth floors delve into the region’s flora and fauna and geological diversity, respectively. The design culminates in a panoramic observation deck on the fifth floor, offering extensive views of the Icelandic scenery.

Sustainability and Materiality

Sustainability plays a significant role in the design of the Sowilo Tower, utilizing passive solar strategies to enhance energy efficiency. The building includes windows that are designed to maximize solar gain during winter months. Additionally, a geothermal energy system draws on nearby hot springs for heating needs. Rainwater recovery systems make use of Iceland’s abundant rainfall. Although not all materials are specified, mentions of neutral materials and wood-based engineered components suggest a focus on environmentally friendly building practices.

Technical Features

The construction approach incorporates pre-fabricated technologies, which helps streamline the process and reduces on-site assembly time. This method also aims to lower environmental impact by optimizing the use of resources. The design prioritizes flexibility, allowing future changes or adaptations. Each element of the tower contributes to its overall connection with the landscape, including its upward-reaching form, which naturally draws the eye to the sky and expands outward toward the stunning surroundings.

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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

Enter an open architecture
competition now

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