Get inspired!

17,725 architecture projects

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

Geothermal Observation Platforms with Basaltic Concrete and Corten Steel Elements

Authors:
Andrea Sibaja Matamoros, Douglas Castro Alfaro, Maria José Zúñiga Blanco, Maria Fernanda Matamoros Araya
Geothermal Observation Platforms with Basaltic Concrete and Corten Steel Elements
Explore the full project presentation!
Subscribers only
The integration of geothermal systems, basaltic concrete, and corten steel defines a facility designed for observation and interaction with the striking geological features of Iceland's Grjótagjá caves.
5 key facts about this project
01
Observation platforms designed to enhance views of the Mid-Atlantic Ridge.
02
Constructed using locally sourced basaltic concrete for environmental integration.
03
Features geothermal energy systems to minimize ecological impact.
04
Includes a facility for water treatment and energy management.
05
Innovative use of corten steel provides durability in harsh weather conditions.

The Iceland Cave Tower stands within the distinctive volcanic landscape of the Grjótagjá caves in Iceland. It serves as a space for visitors to observe and engage with the striking geological features of the area. The design concept revolves around the relationship between the structure and the environment, presenting a physical connection to the geological processes that have shaped this region.

Design Concept

The concept of the Iceland Cave Tower draws inspiration from the geological formations found in the area. The structure resembles a welding line, suggesting a connection between two land masses. A diagonal element is key to the design, highlighting the vertical nature of the geological fault. This choice guides the attention of visitors toward the captivating landscape, making the experience of viewing the Mid-Atlantic Ridge more engaging.

Functionality and Visitor Experience

The layout incorporates various functional spaces that enhance the visitor experience. Features include observation platforms, a café, waiting areas, and changing rooms. This arrangement promotes smooth movement throughout the site, allowing people to easily navigate between different areas. Public and private trails lead visitors from parking spaces to the main entrance, ensuring accessibility while respecting the natural contours of the land.

Sustainability Considerations

Sustainability is an important aspect of the design. An engine house, which focuses on managing water and energy, illustrates this commitment. It uses systems like biodigesters and geothermal energy solutions. By integrating these features, the design aims to minimize environmental impact, showcasing a responsible approach to architecture amidst nature.

Materials

The materials selected for the Iceland Cave Tower include basaltic concrete and laminated glass. These are chosen to blend with the surrounding landscape. In addition, permeable corten steel and a recycled aluminum structure support the project’s sustainable goals. The material choices reflect a focus on durability and environmental responsibility.

Large observation platforms provide expansive views of the surrounding geological formations, inviting visitors to appreciate the area's unique beauty.

Noticed a mistake?
Highlight the text and click on
Noticed a mistake

Mujassam Watan Urban Sculpture Challenge #8

Mujassam Watan Urban Sculpture Challenge #8

Design iconic urban sculptures for the prestigious Mujassam Watan competition and compete for 50,000 €

50,000 € PRIZE project COMPETITION
Prize 50,000 + Potential realisation
Eligibility Open to all
Final registration deadline 23 July 2026

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
Portugal Long Table 
Restaurant

Design a slow-living restaurant in Portugal

project COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 8 July 2026
new
Vancouver 
Tall Challenge

Design the future of Vancouver’s skyline

Building higher downtown ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 15 July 2026
new
The Quiet 
Tower

Design an observation tower in Latvia

project COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 22 July 2026
Mujassam Watan 
Urban Sculpture Challenge #8

Design iconic urban sculptures for the prestigious Mujassam Watan competition and compete for 50,000 €

50,000 € PRIZE project COMPETITION
Prize 50,000 + Potential realisation
Eligibility Open to all
Final registration deadline 23 July 2026
new
New York High Falls 
Riverfront Market

Design a New Riverfront Market in Rochester, New York

ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 29 July 2026
new
Valli Wine 
Tasting Room

Design a wine tasting room in Italy

project COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 30 July 2026
Pavilion Atlas 2026

Design a story of your country

ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Final registration deadline 16 September 2026

Recurring architecture competitions

Museum of 
Emotions

Use architecture to create different emotional states

Edition #8 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 18 June 2026
new
Kinderspace

Design a kindergarten of tomorrow

Architecture for Children’s Development #4 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 18 June 2026
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 #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 2 July 2026
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
Advance registration deadline 9 July 2026
Underbridge #2

Design housing in underutilized bridge spaces

Affordable Housing Edition #20 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 16 July 2026
MICROHOME 2026

Design a new concept of small-scale home and share a prize fund of 100,000€

100,000 € Prize Fund / Kingpsan Edition #11 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 September 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