Get inspired!

17,725 architecture projects

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

Cavern Windows and Dark Concrete Harmonize with Volcanic Landscape

Author:
Ulysse Géroux
Cavern Windows and Dark Concrete Harmonize with Volcanic Landscape
Explore the full project presentation!
Subscribers only
The interplay of cavern windows and dark concrete allows Grýla’s House to seamlessly blend into the volcanic landscape, creating an intimate visitor center that engages with Icelandic myths and showcases the region's natural beauty.
5 key facts about this project
01
Grýla's House features walls that are entirely clad in dark projected concrete, enhancing its connection to the volcanic surroundings.
02
The design includes cavern-like windows that frame dynamic views of the changing landscape while providing a sense of security.
03
The entrance descends one meter below ground level, allowing for an immersive experience in the natural setting.
04
Poplar wood paneling inside creates a warm atmosphere, contrasting with the building's rugged exterior.
05
Curved walls guide visitors throughout the space, encouraging exploration and interaction with the environment.

Grýla's House is located in the Lava Fields of Dimmuborgir, Iceland. This area has been shaped by volcanic activity and is rich in cultural stories. The building serves as a visitor center, allowing guests to connect with the natural landscape while reflecting the local mythology surrounding trolls and other beings. The design captures the essence of time in this region, where the sun and moon dictate the rhythms of daily life.

Form and Landscape Interaction

The structure consists of three curved walls that interact with nearby features such as Mývatn Lake, Hverfjall volcano, and the Dimmuborgir lava field. This form is not just for show; it deliberately engages with the environment, offering views that change throughout the day and across the seasons. The design aims to blend into the landscape, making it feel like a part of the earth rather than an external addition.



Entrance and Spatial Experience

Entering Grýla's House involves a descent into the ground, which enhances the visitor’s experience of nature. This downward movement creates a strong connection between the space inside and the wild surroundings. As people explore the building, they find a layout that flows smoothly from one area to another, allowing for both private moments and shared interactions.



Materiality and Interior Design

The exterior walls are finished with dark projected concrete, which helps the building blend with the deep hues of the landscape. This choice makes the structure appear as if it has always been part of the site. Inside, the walls feature poplar wood paneling, adding a soft warmth to the atmosphere. The simplicity of these materials creates a feeling of authenticity, encouraging people to engage with the environment.



Design Details and Engagement

Cavern-like windows are a defining feature, framing views of the beautiful landscape while keeping the interior secure. These openings invite natural light, creating a calming environment that reflects the tranquility of the area. The careful placement of windows allows light and shadow to interact in ways that enhance the experience within the building, reinforcing the connection to the outside world.

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

Enter an open architecture
competition now

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
Buildner's Unbuilt Award 2026
Buildner's Unbuilt Award 2026
100,000€ Prize / 2026

The Next House: USA — A Global Call to Reimagine the American Suburb

`
Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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

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

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
new
Buildner's Unbuilt Award 2026

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2026 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Early bird registration deadline 26 February 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