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Rainwater Harmony Within Cork and Terracotta Retreat

Authors:
Felix Kruthaup, Eduarda Poubel, Muriel Lippert
Rainwater Harmony Within Cork and Terracotta Retreat
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Utilizing cork walls and terracotta tiles for effective rainwater management, the design creates a sustainable retreat that emphasizes solitude and connection with nature.
5 key facts about this project
01
Utilizes tree screws to anchor the structure while minimizing damage to surrounding flora.
02
Incorporates a mulch basin for effective greywater treatment within the landscape.
03
Features a back-ventilated roof design that regulates indoor climate naturally.
04
Walls made from solid cork enhance thermal insulation and provide acoustic privacy.
05
Includes an impluvium for rainwater collection, seamlessly integrating sustainability into the design.

O CANTO DAS LÁGRIMAS forms a quiet retreat that highlights the relationship between built space and nature. Located among greenery, the structure provides a space for reflection and connection. The design concept centers on creating a place that works with its surroundings, encouraging both social interaction and personal solitude in a natural setting.

Concept and Spatial Organization

The concept focuses on offering a retreat that promotes a thoughtful engagement with the environment. Spaces are laid out to support both social gatherings and moments of solitude. The design allows occupants to interact with the landscape, making use of sensory elements like the sound of rainwater falling on the structure. This sound enhances the experience of being in nature, adding depth to everyday activities.

Materiality

Materials were selected for their environmental qualities and their ability to blend with the landscape. The walls are made from solid cork, which provides insulation while ensuring a sense of privacy. This choice reflects a dedication to low-impact living and keeps a connection to the outdoors. Terracotta tiles line the impluvium, helping collect water and showcasing local craftsmanship.

Climate Control and Structural Elevation

The roof design features ventilation and insulation that regulate temperature throughout the year. This helps ensure comfort while reducing energy use. The building is elevated above the ground using a wooden beam, which limits disruption to the natural environment and provides clear views of the surroundings. Tree screws anchor the structure, ensuring minimal damage to nearby plants and allowing them to grow without hindrance.

Water Management Systems

Effective water management is a key feature of the design. A mulch basin blends with the landscape to treat greywater, highlighting a focus on environmental care. The inclusion of a composting toilet reinforces the sustainable practices applied throughout. This approach promotes a healthy relationship between the building and the landscape, allowing both to coexist.

Natural light plays a significant role in how the interior feels. Sunlight comes through openings, creating changing patterns on surfaces. This connection to the outside blurs the lines between indoors and outdoors, supporting the idea of harmony with nature.

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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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Competition organisers

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 €
Eligibility Open to all
Final registration deadline 30 October 2025

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