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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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MICROHOME 2026
MICROHOME 2026
100,000 € Prize Fund / Kingpsan Edition #11
The Next House: USA
The Next House: USA
20,000 USD Prize
Buildner's Unbuilt Award 2026
Buildner's Unbuilt Award 2026
100,000€ Prize / 2026

The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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