Get inspired!

17,725 architecture projects

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

Green Roofs and Semi-Underground Design in a Community-Integrated Sauna

Authors:
Jingyi Zhan, Xvefen Hu, Hang Yin
Green Roofs and Semi-Underground Design in a Community-Integrated Sauna
Explore the full project presentation!
Subscribers only
The semi-underground structure, topped with green roofs and designed around a culturally significant sauna, integrates seamlessly into its Latvian landscape while providing a unique residential experience.
5 key facts about this project
01
The design incorporates a semi-underground layout to enhance energy efficiency.
02
Green roofs support local biodiversity and blend the building with its natural surroundings.
03
Culturally significant sauna features encourage traditional practices, enhancing local lifestyle.
04
Functional zoning is informed by prevailing wind patterns, optimizing outdoor usability.
05
Dual entrances on different levels improve accessibility and flow throughout the residence.

The architectural design titled “Disappeared Buildings” is located in Latvia and aims to create living spaces that closely interact with the surrounding landscape. The project is built around the concept of "hidden limitation," which means that the design integrates with nature rather than overpowering it. By focusing on sustainability, the architecture strives to preserve the environment while offering comfortable and functional spaces for residents.

Site Challenges and Analysis

The site covers an area of 23,560 m², but the available building footprint is only about 100 m². This challenge creates opportunities to incorporate thoughtful landscape design while ensuring that most of the site remains natural. The local weather conditions are also important, particularly the wind direction, which affects how outdoor spaces, such as those for barbecues, are arranged. By taking these factors into account, the design promotes enjoyable outdoor experiences throughout the year.

Architectural Style and Functionality

The building features a narrow base that runs east to west, which adds complexity to the planning of roads and surrounding landscape. Two entrances at different levels improve access and encourage movement through the space. A mix of horizontal and vertical designs creates distinct functional areas while maintaining overall connectivity. Local traditions influence the architecture, evident in the design of a sauna that promotes traditional customs, such as jumping into water, enhancing the connections to local culture.

Landscape Integration and Sustainable Practices

The project employs a semi-underground construction approach. This method not only improves energy efficiency but also helps the building blend into its natural surroundings. Green roofs are part of the design, supporting local plant life while helping to regulate temperature. The layout is carefully aligned with the adjacent riverbank, establishing a direct relationship between the structure and the landscape.

Invisible boundaries throughout the site allow for fluid transitions between various areas. This design choice ensures privacy while also fostering community interactions. Thoughtful planning emphasizes a deep respect for nature and creates spaces that encourage residents to engage with their environment, resulting in a blend of functionality and comfort.

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