Get inspired!

17,725 architecture projects

Learn from past Buildner architecture competition participants through our extensive project library, curated over more than 15 years!

Floating Cabins of Board-Formed Concrete with Natural Wood Accents for Holistic Retreats

Author:
Paul Baird
Floating Cabins of Board-Formed Concrete with Natural Wood Accents for Holistic Retreats
Explore the full project presentation!
Subscribers only
Elevated cabins constructed from board-formed concrete and natural wood provide a tranquil setting for meditation and holistic treatments within a vibrant garden landscape.
5 key facts about this project
01
Cabins are elevated half a meter above the ground to enhance interaction with the surrounding landscape.
02
The use of board-formed concrete integrates locally sourced earth and stone for a natural aesthetic.
03
Design includes large curved sliding glass doors that frame views of the Serra da Estrela foothills.
04
A newly developed perennial garden attracts local wildlife, enriching the ecosystem around the cabins.
05
Each cabin type is uniquely sized to accommodate individual solitude or group gatherings.

Lirio d'Aqua is a series of cabins designed for meditation, yoga, and holistic treatments, located in the Vale de Moses Retreat near Oleiros in central Portugal. The design reflects a focus on creating tranquil spaces that encourage personal reflection and community engagement. Each cabin seeks to foster a connection with nature, allowing visitors to immerse themselves in a peaceful environment.

Architecture Concept

The design features three different cabins called Pequeno, Medio, and Amplo, which translate to small, medium, and large. This variety allows the space to serve both individuals seeking solitude and groups looking for shared experiences. The overall architecture prioritizes flexibility and adaptability, ensuring that the cabins can accommodate different needs throughout the retreat.

Site Integration

An important aspect of the project is the transformation of a lower stone terrace into a garden, which brings new life to the area. This garden is meant to support native plants and flowers, creating a habitat for birds and pollinators. The addition of greenery enhances the beauty of the landscape and encourages visitors to engage with the natural surroundings throughout the seasons.

Structural Design

Each cabin has a circular shape and is elevated about half a meter off the ground, which helps them blend into the environment. The decks surrounding the cabins provide extra space and promote interaction with the landscape. The use of vertical board-formed concrete, made from earth and stone sourced from the location, gives the cabins a strong connection to the site and reflects the natural textures of the area.

Interior Experience

Inside, the cabins feature a light wood screen that discreetly conceals the bathroom and storage areas, which helps maintain a sense of openness. The careful positioning of each cabin enhances privacy while allowing for views of the nature outside. Floor-to-ceiling curved sliding glass doors invite in natural light and frame views of the Serra da Estrela foothills, encouraging a sense of connection with the landscape.

The cabins also include accessible rooftops that offer opportunities to enjoy the environment, whether it is witnessing the tree canopy or stargazing at night. These elements contribute to the calming and restorative nature of the retreat, providing spaces that support reflection and connection to the surrounding beauty.

Noticed a mistake?
Highlight the text and click on
Noticed a mistake

Enter an open architecture
competition now

The Architect’s 
Stair
The Architect’s Stair
Take a step and make a statement! Edition #3
Kinderspace
Kinderspace
Architecture for Children’s Development #3
Buildner's Unbuilt Award 2025
Buildner's Unbuilt Award 2025
100,000€ Prize / 2025
The Home of 
Shadows
The Home of Shadows
The light studies. Edition #4
The Architect's 
Chair
The Architect's Chair
Take a seat and make a statement! Edition #5

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

`
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

Open architecture competitions

  • Closest deadline first
  • Project competitions first
    Selected winning projects have the potential to be constructed
  • Ideas competitions
    Experimental competitions with the focus on pushing the boundaries of creativity
new
Iceland 
Slow Sauna

Design slow sauna in Iceland

project COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 26 November 2025
Concrete 
Pavilion

Design a concrete pavilion

Edition #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Final registration deadline 27 November 2025
new
Pavilion Atlas 2026

Design a story of your country

ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 21 January 2026

Recurring architecture competitions

new
The Architect’s 
Stair

Take a step and make a statement!

Take a step and make a statement! Edition #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 15 October 2025
Kinderspace

Design a kindergarten of tomorrow

Architecture for Children’s Development #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 16 October 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
new
The Home of 
Shadows

Design a home with no artificial lighting

The light studies. Edition #4 ideas COMPETITION
Prize Monetary award
Eligibility OPEN TO ALL
Early bird registration deadline 5 November 2025
The Last 
Nuclear Bomb Memorial

Design a memorial that speaks to the cause of ending all nuclear weapons programs

Edition #6 ideas COMPETITION SILENT CONTEST For this competition, NO DESCRIPTION TEXT is allowed. The architecture ideas must be communicated strictly with visuals.
Prize Monetary award
Eligibility Open to all
Final registration deadline 13 November 2025
new
The Architect's 
Chair

Take a seat and make a statement!

Take a seat and make a statement! Edition #5 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 20 November 2025
Hospice - 
Home for the 
Terminally ill

Design a safe and supportive space to those struggling with a terminal illness

Edition #5 ideas COMPETITION
Prize 10,000 €
Eligibility Open to all
Final registration deadline 26 November 2025
Museum of 
Emotions

Use architecture to create different emotional states

Edition #7 ideas COMPETITION SILENT CONTEST For this competition, NO DESCRIPTION TEXT is allowed. The architecture ideas must be communicated strictly with visuals.
Prize Monetary award
Eligibility Open to all
Final registration deadline 27 November 2025
Re:Form - 
New Life 
for Old Spaces

Choose a site—used, abandoned, or forgotten—anywhere in the world, and give it a new purpose

Edition #2 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 3 December 2025

Media, partners and clients

To view this project in detail,
please log in with your
Architects’ Network Plus account.
Subscription instantly unlocks all the architecture projects plus other member-only benefits:
  • Access the 17,725 Concept Library
  • Professional tools including file transfer, email, portfolio management, and more
Register now
Already a member? Log in

This website uses cookies to improve user experience and gather usage statistics.

More information is available in our Privacy & Cookie policy