Get inspired!

17,725 architecture projects

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

Elliptical Visitor Center Integrating Photovoltaic Glass and Natural Timber in the Dimmuborgir Lava Fields

Authors:
Stian Vestly Holte, Simon Schumacher
Elliptical Visitor Center Integrating Photovoltaic Glass and Natural Timber in the Dimmuborgir Lava Fields
Explore the full project presentation!
Subscribers only
Employing an elliptical shape and transparent photovoltaic glass, the visitor center in the Dimmuborgir Lava Fields harmoniously blends sustainable design with the region's geological heritage, offering a space for education and exploration.
5 key facts about this project
01
The building's elliptical shape enhances visibility of the surrounding landscape.
02
Transparent photovoltaic glass allows natural light while generating energy.
03
Cross-laminated timber panels create large, open interior spaces.
04
A compact parking area reduces environmental impact on the site.
05
The center features curated exhibitions on local geology and ecology.

The architectural design located in the Dimmuborgir Lava Fields in Iceland, named Hraun, serves as a visitor center that connects visitors to the unique geological features of the area. The design aims to provide educational experiences while respecting the natural landscape. The building's layout is elliptical, which minimizes sharp edges and allows for expansive views of the nearby Hverfjall Volcano and the surrounding lava formations.

Design Concept

Hraun's design emphasizes a strong connection to the environment. The elliptical shape of the building creates a flow that guides visitors as they move through the space. This arrangement encourages exploration and engagement while providing clear lines of sight to the stunning landscapes outside. Inside, exhibition spaces tell the story of the lava fields, highlighting their geological past and cultural importance, allowing visitors to appreciate the natural beauty and history of the region.

Structural Features

The structure of Hraun primarily uses timber, supported by steel pillars. This choice aligns with sustainable practices in architecture. Glue-laminated timber beams create the building's roof and floors, forming patterns that connect back to the center. This design choice provides openness inside the building, enabling a gathering of people while ensuring the structure can handle large numbers of visitors over time.

Energy Efficiency

Energy sustainability is an integral part of the design. Photovoltaic panels are incorporated to capture solar energy effectively, taking advantage of the region's climate. The positioning of these panels considers reflections from snow and cooler temperatures, which improve their energy output. Transparent photovoltaic glass on the east, west, and south sides allows for natural light to enter while also producing energy for the building, reducing its dependence on external power sources.

Visitor Experience

The organization of Hraun prioritizes accessibility and ease for visitors. It includes a compact parking area located on the eastern side, which is close to the entrance. There is also a designated drop-off zone for those with limited mobility, reflecting a thoughtful consideration of diverse visitor needs. Inside, the layout includes curated exhibition areas that engage guests, allowing them to learn about the rich narratives that the Dimmuborgir Lava Fields present.

A central skylight allows natural light to fill the interior, creating a bright and welcoming atmosphere. This design choice enhances the connection between visitors and the landscape outside, offering a sense of openness while immersing them in the beauty of the natural surroundings.

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