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Spiraling Glass Facade with Integrated Green Terraces and Rainwater Harvesting Features

Spiraling Glass Facade with Integrated Green Terraces and Rainwater Harvesting Features
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A spiraling glass facade encases a multifunctional tower that integrates green terraces and rainwater harvesting systems, fostering an eco-conscious environment while serving as a vibrant urban hub.
5 key facts about this project
01
Spiraling design reduces wind load through aerodynamic shaping.
02
Integrated green terraces promote urban biodiversity and community access.
03
Rainwater harvesting system enhances sustainability and reduces runoff.
04
Use of fiberglass reinforced plastics for lightweight structural elements.
05
Multi-level observation decks provide panoramic views of the cityscape.

### Project Overview

Located in a vibrant urban center, the tower structure is designed as a multifunctional hub that accommodates commercial, recreational, and observational activities. The architectural intent emphasizes a distinctive spiral form that draws inspiration from natural structures, fostering a sense of growth and movement while ensuring integration with the surrounding cityscape.

### Spatial Configuration and User Engagement

The tower's spatial strategy prioritizes user experience through the incorporation of multiple observation decks that provide expansive views of the skyline. Positioned at strategic intervals, these spaces are designed to enhance interaction with the urban environment, promoting a sense of community and connection. Additionally, an undulating landscaped podium at the tower's base serves as a communal area, encouraging outdoor activities and social engagement while softly transitioning from the built to the natural environment.

### Material Selection and Sustainability Strategies

The material choices reflect a balance between aesthetic appeal and functional performance. The extensive use of glass facilitates natural light penetration, which diminishes reliance on artificial lighting, while steel and concrete form the structural backbone of the building, providing necessary stability. Notably, fiberglass reinforced plastics are employed in select decorative elements for their lightweight and durable properties.

Sustainability is a core aspect of the design, incorporating systems for rainwater harvesting and solar panels integrated into the facade, alongside energy-efficient HVAC technologies. The landscaped podium not only enhances biodiversity but also contributes to mitigating the urban heat island effect, positioning the tower as a forward-thinking example of ecological architecture in an urban context.

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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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