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Water Vapor Tower Reflecting Geothermal Energy in White Steel

Authors:
Barbara Stallone, Francisco Silva
Water Vapor Tower Reflecting Geothermal Energy in White Steel
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Harnessing geothermal energy, the water vapor tower in Grjótagjá integrates white steel structures with the landscape, creating a functional landmark that enhances public access and interaction with its natural surroundings.
5 key facts about this project
01
The tower releases excess geothermal energy as visible water vapor.
02
The design features a modular layout that minimizes ground disturbance.
03
White steel contrasts with the natural landscape, enhancing visual clarity.
04
A walking pathway connects significant geological locations in the area.
05
The structure serves as both a landmark and an educational resource.

The project in Grjótagjá takes full advantage of its unique landscape, defined by the meeting of two large tectonic plates. This area is marked by remarkable geological features and geothermal activity, providing an intriguing backdrop for the design. The structure aims to serve as a point of interest, enhancing the experience of visitors while integrating smoothly with the natural environment.

Design Concept

The design centers around a tower that embodies the connection between nature and human-made structures. It harnesses geothermal energy from the ground and transforms it into water vapor, creating a defining element for Grjótagjá. This approach not only highlights the natural beauty of the site but also emphasizes the interactions between landscape and architecture.

Spatial Organization

A modular strategy is employed, utilizing lightweight components that allow for easy construction and flexibility. These modules are arranged as small, distinct objects scattered throughout the landscape. This arrangement minimizes disruption to the natural ground while promoting a sense of continuity with the environment. This thoughtful layout encourages exploration, inviting visitors to engage with their surroundings.

Pathway Connectivity

A walking path connects the various spaces, forming a public loop that links important locations like Karlagjá and Vogagjá. This pathway enhances accessibility and promotes movement throughout the site. By encouraging people to wander, it fosters a deeper connection to the landscape, allowing visitors to experience the geological features up close.

Materiality and Sustainability

The materials chosen for the project focus on sustainability and visual harmony. The structures are made from white-painted steel, which provides contrast against the natural scenery while maintaining a simple aesthetic. The design efficiently uses geothermal energy, striving to minimize environmental impact and demonstrate a commitment to ecological principles.

The architecture culminates in a well-considered structure that rises from the land, creating an inviting presence that relates to the local geological phenomena.

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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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