Get inspired!

17,725 architecture projects

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

Curved Steel Enclosure Enhances Cave Access and Visitor Experience

Authors:
Israel Luna Mino, Carlos Arteaga Navarro
Curved Steel Enclosure Enhances Cave Access and Visitor Experience
Explore the full project presentation!
Subscribers only
A curved steel enclosure seamlessly integrates with the geological features of Kvennagjá, providing controlled access to the cave while enhancing the visitor experience through elevated viewing points and transparency.
5 key facts about this project
01
Curved roof design mirrors the natural rock formations of Kvennagjá.
02
Controlled access enhances visitor experience while preserving geological integrity.
03
Reinforced concrete walls minimize visual impact on the surrounding landscape.
04
Steel IPE beams allow for open spans and flexible interior configurations.
05
Elevated viewpoints create unique perspectives of the natural environment.

The project is located in the Grjótagjá area, known for its unique caves and geological features. It focuses on creating a private space at the entrance of Kvennagjá to control access while keeping Karlagjá open for public visits. The design aims to blend with the natural surroundings, allowing the building to fit harmoniously into the landscape.

Site Integration

The design emphasizes a surrounding enclosure that interacts gently with the rock formations of Kvennagjá. Enveloping the cave's entrance, the structure enhances privacy and enriches the visitor experience while protecting the natural environment. The building follows a curved form that rises above the rockscape, reflecting the site’s natural contours and creating a link between the architecture and its surroundings.

Accessibility and Experience

Accessibility is a key focus in the design, featuring exterior stairways that lead to elevated points within the structure. This height allows visitors to enjoy different views of the landscape, adding depth to their experience. The use of transparency is crucial, maintaining connections between indoor spaces and the outside environment, which fosters a greater appreciation of the site's geological features.

Materiality and Structural Considerations

Load-bearing reinforced concrete walls are a significant part of the design, providing stability while keeping a low visual impact on the landscape. Steel frames are chosen for their strength, supporting various architectural elements throughout the building. Columns and beams made with IPE sections create open spans, allowing for fluid interior spaces. Concrete slabs further support the roof and elevated areas, contributing to the structure’s overall integrity.

Design Philosophy

The design reflects a careful balance between enclosure and openness, encouraging exploration of the relationship between the built structure and nature. It honors the geological qualities of Grjótagjá, creating a space that provides a unique experience for visitors. The roof’s curvature serves a functional role and enhances the overall appearance, inviting guests to engage with the landscape from multiple angles, highlighting the thoughtful connection between architecture and the natural world.

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