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Sod Integration and Volcanic Ash Create Sustainable Community Hub

Authors:
Bjarke Jansen, Costanza Angeloni, Kleopatra Balatsouka
Sod Integration and Volcanic Ash Create Sustainable Community Hub
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Crafted from volcanic ash and reclaimed wood, the design integrates sod roofs to blend seamlessly with the Icelandic landscape while providing a multifunctional space for community engagement.
5 key facts about this project
01
Crafted with a substantial portion of the structure submerged underground for thermal efficiency.
02
Utilizes volcanic ash for insulation, enhancing energy performance with local materials.
03
Integrated sod roofs support vegetation, promoting biodiversity and ecological engagement.
04
Features large communal greenhouses to foster local agriculture and community interaction.
05
Incorporates climbing walls as part of the design, encouraging active outdoor engagement.

TheHUG is an architectural project located in Iceland that seeks to integrate seamlessly with its natural surroundings while fostering community interaction. The building is organized across six levels, with 60% of its mass situated underground. This strategy not only minimizes its visual impact on the landscape but also maintains thermal stability within the structure throughout varying seasonal climates. The design incorporates a range of sustainable practices, focusing on the careful selection of materials and efficient engineering solutions.

Unique Design Principles

The layout emphasizes communal spaces designed for both individual and collective use. At the ground level, large greenhouses and open communal areas promote agriculture and social gatherings. Each subsequent level features versatile room configurations, including a community room, children's area, and workshops. This tiered structure mimics Iceland's natural topography, with walkable roofs that serve as gardens and recreational areas.

The selection of materials plays a crucial role in the project’s identity. Reclaimed wood, volcanic ash, and reinforced concrete are utilized to create a sustainable building fabric. The incorporation of volcanic ash enhances the insulating properties while also leveraging local resources. This focus on materiality supports the project's ecological goals and reflects a commitment to low-carbon design.

Functional Integration

TheHUG's design advances energy efficiency and promotes recycling. A strategic layout ensures natural daylight optimizes interior spaces while reducing reliance on artificial lighting. Key features such as composting initiatives allow for effective waste management, contributing to the building’s environmental strategy. The presence of climbing walls and interactive gardens encourages residents to engage with their environment actively.

This architectural project stands out for its emphasis on adaptability to Iceland's climatic extremes. The design provides usability throughout the year, facilitating various outdoor activities regardless of the season. The harmonious blend of built and natural environments invites users to experience a connection with the landscape.

For more details on architectural plans, sections, and design ideas, readers are encouraged to explore the project presentation to fully appreciate the thought that has gone into TheHUG's development. This project exemplifies a balanced approach to architecture, sustainability, and community development.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
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Final registration deadline 30 October 2025

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