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Floating Structure over Geothermal Pool with Icicles and Horizontal Integration

Authors:
Panchanok Tinnu, Takayuki Ueyama, Kazuya Nakagami
Floating Structure over Geothermal Pool with Icicles and Horizontal Integration
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Floating above a geothermal pool, the structure features horizontal slabs that create icicles during winter and provide varied visual engagement while serving as a public space for viewing and relaxation.
5 key facts about this project
01
Floating above a fissure that separates two continents.
02
Integrates geothermal heating for snow management.
03
Icicles form along the roof edges in winter months.
04
Focus on horizontal slabs creating dynamic viewing areas.
05
Pathways lead directly to natural hot baths.

The design is situated at the distinctive geographical point where the continents of Europe and America meet. It is envisioned as a structure that appears to float above the fissure that separates these landmasses. The purpose of the building is to enhance the connection between people and nature. The design concept focuses on creating spaces for viewing, crossing, and resting, allowing visitors to engage with the landscape around them.

Design Concept

The building uses two horizontal slabs that contrast with the vertical fissure. This arrangement emphasizes a flat plane while drawing attention to the unique geography of the site. The horizontal layout allows for various views from within, encouraging visitors to appreciate the landscape that surrounds them. The combination of these forms enhances both the structure and the experience it provides.

Spatial Organization

The interior layout is carefully arranged to support different activities. It includes spaces such as a café, pantry, and offices, as well as separate changing rooms for men and women. Multiple staircases connect these areas, facilitating movement throughout the building. This thoughtful design ensures that visitors can flow easily from one space to another while enjoying a comfortable environment.

Water Circulation System

A notable feature of the design is the water circulation system that links the building to a geothermal pool beneath the fissure. This system allows the building to access hot water, which helps manage snow buildup during winter months. As the snow melts, water flows over the roof edges, creating icicles. This not only serves a functional purpose but also adds a visual element that appeals to those inside, making them more aware of their connection to the environment.

Site Integration

The design takes into account the natural features and terrain of the site. Key elements include a parking area, pathways leading to hot baths, and viewing platforms that encourage exploration. These features enhance the overall experience and allow visitors to fully engage with the unique landscape. The position of the building ensures that it complements its surroundings, creating a harmonious relationship between architecture and nature.

The water flowing from the roof and the icicles that form as a result create a dynamic visual experience, drawing attention to the relationship between the building and its natural environment.

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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 €
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Final registration deadline 30 October 2025

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