Get inspired!

17,725 architecture projects

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

Embracing Geological Formations with Rock and Gabion Walls in a Thermal Springs Retreat

Authors:
Justin Watts, Lewis Johnson
Embracing Geological Formations with Rock and Gabion Walls in a Thermal Springs Retreat
Explore the full project presentation!
Subscribers only
Constructed with locally sourced rock and gabion walls, the guest house integrates seamlessly into the volcanic landscape, providing visitors with a unique thermal springs experience while preserving the natural topography.
5 key facts about this project
01
Constructed using local rock and gabion walls to enhance integration with the volcanic landscape.
02
Designed with a central spine that symbolizes the geological formations beneath it.
03
Features individual guest pods that promote both privacy and communal interaction.
04
Incorporates a green roof that merges with the existing ground cover for ecological benefits.
05
Utilizes a heat pump system to optimize energy efficiency through natural thermal sources.

The Icelandic Thermal Springs Guest House is located in the Northern Volcanic Rift Zone of Iceland, specifically between the Þeistareykir and Krafla rift zones along the Mid-Atlantic Ridge. Designed for visitors seeking accommodation, the structure respects the unique geological and climatic qualities of its surroundings. The design emphasizes a connection between the indoor environment and the natural landscape, with a focus on sustainability and community interaction.

Primary Structural Elements

A central spine serves as the main organizing feature of the building. This spine reflects the geological layers beneath the surface and guides movement across the site. It connects individual guest pods with shared spaces, allowing for easy circulation within the structure. A visually distinct secondary axis runs parallel, marked by a vivid blue line, inspired by glacial rivers and the colors of the Aurora Borealis. This element enriches the visual character of the building, making it a unique landmark.

Integration with Landscape

The site strategy emphasizes the relationship between the building and the natural terrain. The rear volume of the guest house is set into the hillside, which helps reduce its visual impact and blend it into the landscape. A green roof adds to this integration by merging with the surrounding ground cover, thereby reinforcing the connection to the environment while enhancing the ecological footprint of the design.

Sustainability Features

Sustainability is a critical aspect of the design approach. The excavation needed for the communal hot tub is repurposed; the rock that is removed becomes part of gabion walls and pathways. This practice minimizes waste and contributes to the functional and aesthetic qualities of the site. The focus on reusing materials reflects a commitment to environmental responsibility.

Energy and Light Management

The project incorporates a heat pump system that utilizes both thermal mass and volcanic ground heat for efficient energy use. This system ensures that hot water distribution is optimized, reducing energy waste. Additionally, the design includes recessed glazing and overhangs to properly manage sunlight, creating a comfortable atmosphere indoors while improving overall energy performance.

The guest pods feature wide windows that provide views of the surrounding landscape, allowing natural light to fill the spaces. This design choice not only enhances the interior experience but also strengthens the connection between the occupants and the captivating Icelandic scenery.

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

Enter an open architecture
competition now

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 Next House: USA
The Next House: USA
20,000 USD Prize
The Architect's 
Chair
The Architect's Chair
Take a seat and make a statement! Edition #5
Kinderspace
Kinderspace
Architecture for Children’s Development #3
The Architect’s 
Stair
The Architect’s Stair
Take a step and make a statement! Edition #3

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
The Next House: USA

Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 19 November 2025
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

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
Kinderspace

Design a kindergarten of tomorrow

Architecture for Children’s Development #3 ideas COMPETITION
Prize Monetary award
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
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
Advance registration deadline 15 January 2026

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