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Earth Concrete and Cross-Laminated Timber Create a Harmonious Retreat in the Portuguese Landscape

Authors:
Anthony Michalik, Rodrigue Bourdouch, Thomas Jennen, Théo Collignon
Earth Concrete and Cross-Laminated Timber Create a Harmonious Retreat in the Portuguese Landscape
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Utilizing earth concrete and cross-laminated timber, this retreat seamlessly integrates with the natural landscape while providing a peaceful hub for communal living and reflection.
5 key facts about this project
01
Utilizes 400 mm raw earth concrete walls for enhanced thermal performance.
02
Features expansive glass walls to maximize natural light and scenic views.
03
Incorporates a meditation space designed for introspective experiences.
04
Employs local materials to create an authentic connection with its environment.
05
Balances communal and private areas through intentional spatial configuration.

### Overview
Casa Oliveira is situated within the scenic landscapes of the Portuguese countryside, designed to foster community engagement and a sense of tranquility. The project aims to create spaces for both individual reflection and communal interaction, thereby promoting a lifestyle that embraces nature and connection.

### Spatial Strategy
The architectural layout is structured around three primary zones: guest accommodations, a meditation space, and a central living area. This organization allows for a balance between privacy and socialization, with interconnected pathways facilitating movement throughout the space. The use of an open-plan design enhances the flow between these distinct areas, while large windows provide abundant natural light and establish a seamless connection to the exterior landscape.

### Materiality and Sustainability
The choice of materials significantly influences both the functional and aesthetic aspects of Casa Oliveira. The use of 400 mm wide raw earth concrete walls emphasizes thermal efficiency and contributes to a tactile environment. In addition, local wood elements are incorporated into beams and flooring, introducing organic textures that complement the natural setting. Glass features prominently, offering transparency and maximizing views of the surrounding landscape. The design reflects a commitment to regional building traditions and ecological sustainability, evident in the thoughtful integration of materials sourced from the local context.

The overall design achieves a harmonious blend of spaces that accommodate communal gatherings and individual retreats, enhancing the quality of life for its users.

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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.

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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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