Get inspired!

17,725 architecture projects

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

Vaulted Roofs and Charred Timber in a Sustainable Retreat

Author:
Tom Kitson
Vaulted Roofs and Charred Timber in a Sustainable Retreat
Explore the full project presentation!
Subscribers only
The distinctive vaulted roof and charred timber cladding blend with the Icelandic landscape to create a sustainable retreat that fosters a deep connection to nature.
5 key facts about this project
01
Vaulted roof design echoes the natural contours of the Icelandic landscape.
02
Radial layout enhances visitor flow and maximizes scenic views.
03
Charred timber cladding increases durability against harsh weather.
04
Green roof incorporates native flora, promoting local biodiversity.
05
Amphitheater-like ground level fosters a seamless indoor-outdoor connection.

Underland sits in the unique landscape of Iceland, designed to serve as a retreat for visitors while focusing on a strong connection to the environment. The design aims to blend with the natural terrain rather than stand apart from it. Through this approach, the project not only provides spaces for relaxation but also allows visitors to engage deeply with the surrounding beauty.

Design Concept

The building features a prominent vaulted 'shell' roof that conforms gracefully to the site's contours. This undulating shape mimics the natural forms found in the landscape, creating a profile that feels as if it belongs in the environment. Inside, spaces are arranged in a radial layout that promotes movement, guiding visitors with ease while offering views of the picturesque surroundings. Private areas are thoughtfully placed on the west side, ensuring privacy, while more public spaces are oriented towards open southern vistas.

Spatial Interaction

The design encourages interaction between indoor and outdoor areas. Inspired by the idea of an amphitheater, the ground level slopes down toward the entrances, which enhances the connection between the different spaces. As visitors move inside, the floor levels rise again, providing clear lines of sight from common areas like the café. This design ensures that even during busy times, the landscape remains a prominent feature, reinforcing the relationship between the structure and its beautiful setting.

Sustainability Initiatives

Sustainability is a key focus in Underland. A 'green roof' is incorporated, where native plants grow over the structure. This not only minimizes the impact on the existing ecosystem but also helps to support local biodiversity. By designing with sustainability in mind, the project demonstrates a commitment to protecting the natural environment around it.

Material Considerations

Materials used in the project are chosen for their durability and ecological impact. The building uses eco-concrete made from fly ash, which lowers CO2 emissions and provides strength suitable for Iceland's weather. Charred timber clads the retaining walls, adding texture and durability. The ceiling features curved plywood slats, which contribute to the interior's warmth while echoing the flowing forms of the landscape.

The structure's multi-layered roof extends outward, inviting views of the sky while reflecting the gentle rise and fall of the surrounding land.

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