Get inspired!

17,725 architecture projects

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

Conical Structure Featuring Burnt Wood and Integrated Greenhouse Functions

Authors:
Jola Wagener, Lisa-marie Sarré, Alina Gafka, Saskia Timisela
Conical Structure Featuring Burnt Wood and Integrated Greenhouse Functions
Explore the full project presentation!
Subscribers only
A conical structure crafted from burnt wood integrates an adjacent greenhouse to support local food production while providing a unique dining experience near Iceland’s Hverfjall volcano.
5 key facts about this project
01
Conical shape enhances natural light and views of the surrounding landscape.
02
Burnt wood facade integrates aesthetics with regional weather durability.
03
Adjacent greenhouse supports local plant cultivation and dining experience.
04
Geothermal energy source reduces environmental impact and operational costs.
05
Unique water feature creates a tranquil atmosphere in the outdoor area.

The design project located near Hverfjall volcano and Mývatn Nature Baths features a conical structure that blends harmoniously into its natural surroundings. It serves two primary functions: a greenhouse and a restaurant. This design promotes sustainable practices while emphasizing the connection between food production and dining. The overall concept highlights the relationship of the building to the landscape, enhancing both its visual appeal and the experience of those who visit.

Site Integration

The conical shape is carefully aligned with the surrounding topography and reflects the mountainous landscape. This form captures natural light efficiently and creates a smooth transition between the indoor and outdoor spaces. Visitors are drawn into the experience of nature, with the design guiding them from the environment into the building.

Functional Connectivity

Combining the greenhouse and restaurant under one roof allows for effective operation of both areas. The restaurant is positioned at the wider base of the cone, which overlaps slightly with the greenhouse. This overlap reduces shading and ensures that plants receive enough sunlight for growth. As guests walk through the greenhouse along a stone path, they have a direct connection to the food that will be served in the restaurant.

Accessibility and Movement

Accessibility is a key aspect of the design, with clearly marked entrances and an elevator to cater to all visitors. A grand staircase connects the greenhouse with the dining area, creating a visual link between these spaces. The parking area is designed to accommodate various vehicles, providing convenience without compromising the natural beauty of the site.

Sustainable Practices

Geothermal energy from nearby fields provides the building’s main energy source, supporting efficient heating and operations. A rainwater catchment system adds to sustainability, helping the facility gather water for use. The design also incorporates greenery on the lower roof, reducing environmental impact and supporting diverse plant life through separate climate zones within the greenhouse.

The use of burnt wood for the facade creates a tactile link to the landscape. Inside, warm materials reflect the region's natural characteristics. Attention to detail throughout fosters an atmosphere that resonates with the surrounding environment. The conical structure rises gently from the ground, inviting visitors to engage with nature while enjoying their experience.

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