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Caves Below Glass Floors and Volcanic Rock Walls in an Icelandic Observation Tower

Author:
Mark Goodman
Caves Below Glass Floors and Volcanic Rock Walls in an Icelandic Observation Tower
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With a central observation tower extending into underground caves and a blend of crystalline structures and volcanic rock walls, the design offers an immersive educational experience about Iceland's geological features.
5 key facts about this project
01
A central observation tower connects directly to an intricate underground cave system.
02
Crystalline structures resemble glacial formations, enhancing the site's geological theme.
03
Transparent glass floors provide views into the subterranean caves, enriching visitor engagement.
04
Volcanic rock walls create natural enclosures while promoting social interaction.
05
A sunken courtyard features a modern farmhouse-like building for communal and educational activities.

The Iceland Cave Tower is located within the striking volcanic landscapes of Iceland. It serves as a landmark that connects the surface and the underground world. The design offers an immersive experience for visitors, giving them insight into the geological features that shape the region. The overall concept centers around the meeting of two continents, reflecting the complex movements of tectonic plates while inviting exploration and learning.

Central Observation Tower

At the core of the design is an observation tower that stands tall above the natural terrain. This tower provides extensive views of the landscape surrounding it. It also extends below ground to link with the unique cave systems that lie beneath. This feature encourages visitors to engage with both the beautiful scenery above and the fascinating geological structures below.



Crystalline Surroundings

Surrounding the central tower are crystalline structures that offer various functions, including waiting areas, offices, and restrooms. These structures are shaped like shards, mirroring the appearance of ice formations. This design element adds to the connection with the Icelandic environment. Glass floors are present in some areas, allowing visitors to see into the cave system beneath, enhancing their overall experience and encouraging exploration.



Social and Educational Spaces

Next to the observation tower is a sunken courtyard featuring a building designed to resemble a modern farmhouse. This building houses a café and information center, providing both indoor and outdoor seating. The layout supports social interaction among visitors while also offering educational opportunities. Accessibility is a priority, with wide steps and ramps ensuring all guests can navigate the area comfortably and engage with the space.



Pathways and Cave Access

The design incorporates modular pathways made from a blend of aluminum and wood, lifted above the lava fields to reduce environmental impact. These pathways connect different parts of the site, guiding visitors toward the Vogagjá Cave and its geological wonders. A circular pavilion contains a spiral stairwell, enhancing the experience as visitors descend into the cave. At night, the lighting adds a visual dimension to the tower.

Clear signs in multiple languages help guide visitors through the site, making it easier for everyone to learn about Iceland's rich geological history. The thoughtful details in the design contribute to an engaging and informative experience for all who visit.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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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

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