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Curved Pathway and Recycled Steel Watchtower Embracing Natural Caves

Authors:
Antonis Koulouthros, Dimitris Papoutsis, Chrysanthi Mastori, George Smponias
Curved Pathway and Recycled Steel Watchtower Embracing Natural Caves
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A watchtower constructed from recycled steel rises above a curved pathway that guides visitors through a fissure, enhancing the experience of exploring the unique cave systems in Iceland.
5 key facts about this project
01
A watchtower positioned between Grotagja caves enhances natural landscape observation.
02
Curved pathway connects two continents while allowing exploration of cave systems.
03
Prefabricated CLT panels provide efficient insulation and reduce construction waste.
04
Recycled steel construction minimizes environmental impact and promotes sustainability.
05
Vertical circulation design maximizes views of the surrounding fissure and landscape.

The design embodies a clear vision that connects built form with the natural landscape, situated in a unique geographical setting where two continents are separated by a fissure. The project focuses on enhancing the visitor experience through a winding path that allows exploration and interaction with the surrounding cave systems. A watchtower is positioned strategically between the Grotagja caves, serving an essential role in linking visitors with the natural environment and providing a viewpoint that encourages appreciation for the landscape.

Path Module

The pathway is divided into two distinct types. Type A is constructed using wood and metal and is designed for more challenging terrains and elevated areas. Type B, on the other hand, utilizes local materials such as sand and stone for flat regions. This thoughtful selection of materials not only promotes a connection with the environment but also supports a functional design that enhances the visitor's journey through the landscape.

Spacial Division

Clear divisions of space are established within the design. A dominant pinnacle rises prominently, providing a focal point in the landscape, while a narrow column consolidates secondary functions. Visitors are encouraged to move vertically within the watchtower, and the column guides them horizontally toward the café area. This arrangement maximizes usability and helps create a logical flow throughout the overall project, allowing for a more organized experience.

Visitor Experience

The observation platform includes important functions such as a café, storage, an office, and a waiting area for visitors. These elements are arranged to create connections with nature, promoting an interactive experience. By prioritizing easy access and smooth movement, the design facilitates exploration throughout the site, offering opportunities to engage visually and physically with the geological features.

The structure features prefabricated recycled steel, supporting efficient construction and reducing environmental impact. The exterior is clad in prefabricated CLT panels, which provide insulation and contribute to energy conservation. Additionally, a geothermal heat pump system is integrated to ensure efficient heating, highlighting a focus on sustainability throughout the building’s lifecycle.

A key aspect is the pathway that encourages exploration and discovery. It guides visitors through various perspectives and experiences that shift with movement, fostering a deeper connection to the unique geological and ecological surroundings.

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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.

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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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