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Rammed Earth Structure Nurtures Biodiversity Through Organic Growth

Author:
Aris Kafantaris
Rammed Earth Structure Nurtures Biodiversity Through Organic Growth
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Constructed from rammed earth and designed with a material gradient, the incubator supports local flora through a dynamic microclimate while focusing on ecological rehabilitation in the desertifying environment of Delos Island.
5 key facts about this project
01
Constructed with a variable material gradient to support structural stability and nutrient release.
02
Functions through three distinct stages to facilitate ecological rehabilitation over time.
03
Serves as both an incubator for local flora and a shelter for wildlife.
04
Utilizes rammed earth for high thermal mass and biodegradability.
05
Strategically placed openings allow sunlight to create dynamic light patterns within the structure.

The Hearth incubator is a well-considered structure located on Delos Island in the Cyclades archipelago of southern Greece. It aims to rehabilitate landscapes that are suffering from rapid desertification. The design serves as a temporary, biodegradable solution for supporting local flora while also accommodating various forms of wildlife. The concept is grounded in creating microclimates that enhance the conditions needed for plant growth and contribute positively to the surrounding ecosystem.

Design Concept

The design revolves around fostering ecological growth through a structured process. The Hearth operates in three stages that allow it to adapt and change over time. Initially, it cools the ground, increases moisture levels, and provides shaded areas for local fauna. This first phase not only aids in environmental recovery but also promotes awareness among visitors, blending educational elements with practical function.

Stages of Development

As the project progresses, the Hearth gradually releases a combination of local shrub and grass seeds, influenced by seasonal rains. This stage highlights the connection between the structure and natural processes, making it an active participant in its environment. The architectural form becomes a facilitator of ecological transformation, adapting to various environmental conditions.

Self-Sustaining Habitat

In its final stage, the Hearth evolves into a self-sustaining green incubator. As it dissolves into the landscape, it leaves behind nutrient-rich topsoil that promotes the growth of diverse plant life. This transformation illustrates the long-term effects of the structure on the ecosystem, contributing to a healthier and more balanced environment.

Materials and Sustainability

The construction employs rammed earth as its primary material, a choice that reinforces sustainable building practices. This material offers high thermal mass and a substantial surface area, making it effective as a heat sink while allowing for gradual biodegradability. The pillars are designed with a varied material gradient, leading to stable structure and controlled release of nutrients and seeds. This thoughtful engineering demonstrates a strong understanding of the relationship between architecture and nature.

The Hearth incubator exemplifies the potential for design to engage with and foster the environment. Sunlight filters through strategically placed openings, creating soft patterns of light on the ground. These details enhance the ecological experience of the setting, reminding visitors of the connection between human-made structures and the natural world.

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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.

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