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Corten Steel Observation Tower Embracing Geothermal Energy and Natural Landscapes

Authors:
Teresa Cabrera Arzoz, Olga Sánchez Moreno, Ignacio Ruiz Del Portal Pauner
Corten Steel Observation Tower Embracing Geothermal Energy and Natural Landscapes
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Standing 11 meters tall and constructed with corten steel, the observation tower draws upon geothermal principles and rainwater catchment systems to harmonize with the rugged Icelandic landscape while serving as a vital community gathering space.
5 key facts about this project
01
Observation tower reaches 11 meters in height, providing expansive views of the rugged terrain.
02
Utilizes corten steel for durability against harsh weather conditions typical in Iceland.
03
Incorporates a geothermal energy system to enhance sustainability and resource efficiency.
04
Features rainwater catchment systems for efficient water use across the facility.
05
Two pavilions serve distinct functions, promoting community interaction and resource accessibility.

The Iceland Cave Tower project is situated in the expansive landscape of Iceland. It offers an observation point and serves as a community hub. The design revolves around an observation tower that captures the attention of anyone passing by. Located along a roadway, it interacts meaningfully with the area's geological features. The project also includes two pavilions that enhance the overall function, providing space for various activities while inviting interaction.

Observation Tower

The observation tower reaches a height of 11 meters, featuring three distinct levels. Each level is designed to offer different views of the surrounding terrain. The lower levels keep close connections to the natural features, while the upper level provides wide-ranging vistas of Iceland's rugged beauty. Attention to accessibility ensures that all visitors can explore the space without difficulty. The presence of barrier-free access and an elevator promotes inclusivity.

Pavilion Spaces

Two pavilions flank the observation tower, each with specific roles. One pavilion serves as an information center, including areas for a cafeteria, office space, and restrooms. Rainwater catchment systems are part of the design, which aids in resource conservation. Surrounding pathways extend from the tower, creating a lively public space that encourages movement and community engagement.

Bioclimatic Considerations

Bioclimatic strategies play a key role in the design, contributing to energy efficiency and comfort. Special glazing reduces heat loss while allowing sunlight to enter, maintaining stable temperatures indoors. The steeply pitched roofs are effective at managing rain and snow, helping to avoid ice dams. Extended overhangs provide needed shade during summer and allow sunlight in during winter.

Materials and Modularity

Materials are chosen to reflect the local context. The project incorporates wood sourced from the nearby area, supporting traditional Icelandic building methods. Corten steel sheets are used for the exterior, providing protection against the local climate. A modular approach characterizes the design of pathways, making construction simpler while maintaining a unified look. Each module has angled designs that create a pleasing connection between the built structures and the landscape.

The design culminates in a viewing platform that extends outward, fostering a feeling of openness. Visitors are encouraged to immerse themselves in the expansive views of the Icelandic landscape, creating a strong connection between people and nature.

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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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