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Tectonic Boundary Structure with Reflective Features Overlooking Natural Landscapes

Author:
Hansol Yoo
Tectonic Boundary Structure with Reflective Features Overlooking Natural Landscapes
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Rising at the tectonic boundary of two continental plates, the observatory features a cave-like space and reflective walls that engage visitors with the surrounding natural landscape while serving as a vantage point for exploration.
5 key facts about this project
01
Cave-like space designed to integrate with the natural landscape.
02
Reflective walls enhance the connection between interior and exterior environments.
03
Positioned at the tectonic boundary of two continental plates.
04
Multiple viewing points offer varied perspectives of the surrounding geology.
05
Facade mimics cracked boundary stone, echoing the site's geological features.

The Iceland Cave Tower is located at Grjotagjá, a notable cave hot spring in Northern Iceland. This setting is defined by its position at the boundary of the North American and Eurasian tectonic plates. The tower functions as an observatory, providing visitors an opportunity to engage with the striking landscape while being mindful of the ecological context. The design concept reflects a desire to connect the natural environment with human experience, fostering a relationship between the constructed space and its geographical surroundings.

Geological Engagement

The design draws inspiration from the area's geological features. The name Grjotagjá translates to "stone gap," highlighting the connection to the landscape. The observatory rises above the ground, offering vantage points to appreciate the unique forms of the terrain. By aligning the structure with the physical characteristics of the site, the design emphasizes the relationship between the architecture and the geology of the region.

Cave-like Formation

A notable feature of the tower is the creation of a cave-like area beneath the observatory. This space accommodates visitors while enhancing the experience of being in a natural setting. The design respects the contours of the landscape, helping to integrate human activity within the geological formation. This cave-like space invites visitors to explore and reflect on their surroundings, encouraging a deeper understanding of the site.

Reflective Experience

The observatory includes several viewing points that allow visitors to take in the landscape from different perspectives. This arrangement enriches the visitor's experience, enabling them to appreciate the details of the surroundings while minimizing any impact on the ecosystem. Internally, a reflective wall draws the landscape into the building, creating a strong connection between the outside world and the interior space. This design choice enhances the experience of visitors, linking them more closely to the natural environment.

Facade and Aesthetic

The exterior of the building mimics the look of cracked stone, resembling the geological characteristics of the area. This design choice helps to establish a connection with the environment, reinforcing the relationship between the structure and the landscape. The facade serves both an aesthetic and functional purpose, drawing attention to the geological features of the location.

The observatory culminates in a rooftop that provides panoramic views of the landscape, allowing visitors to appreciate the unique topography of Iceland.

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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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