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Vertical Green Facade Featuring Lightweight Metal Sections in Urban Setting

Authors:
Kruti Desai Buhnemann, Sven Buhnemann
Vertical Green Facade Featuring Lightweight Metal Sections in Urban Setting
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Integrating hexagon planter boxes and lightweight metal sections, this design enhances urban biodiversity while providing essential green spaces in a densely populated environment.
5 key facts about this project
01
Vertical garden design maximizes urban biodiversity.
02
Utilizes hexagon planter boxes for efficient growing space.
03
Lightweight metal sections conceal irrigation systems.
04
Integrates evergreen and spring-blooming plants.
05
Enhances microclimate through shading and cooling.

The Vertical Spring project is an architectural initiative located in the city of Cologne. It aims to blend natural elements with the urban environment. The design encourages a connection with nature in a setting where green spaces are often limited. Instead of celebrating spring in parks and gardens outside the city, the project brings vibrant greenery directly into urban areas. The overall goal is to enhance biodiversity and improve the visual landscape through the integration of vertical gardens.

Facade Integration

The design incorporates a modular facade system that features green walls throughout the structure. These walls utilize hexagon planter boxes to support a variety of plant types, including both spring-blooming and evergreen species. With this arrangement, the project fosters a diverse visual experience while ensuring that the plants receive the necessary care through integrated irrigation and drainage systems. This design not only enhances the building's facade but also contributes positively to the surrounding environment.

Microclimate and Environmental Benefits

Vertical Spring is designed to improve the microclimate around the building. The green facade helps reduce heat gain by adding shade, which in turn creates a more comfortable internal environment for occupants. Expansive glass sections allow natural light to enter the building while being tempered by the greenery. This balance between glass and plants serves both aesthetic and environmental purposes, demonstrating that urban architecture can be both functional and pleasing to the eye.

Material Specifications

The structure is supported by lightweight metal hollow sections used within the planter boxes. This choice ensures that the planters are durable and can carry the weight of the plants while remaining manageable. The design also hides essential irrigation and drainage elements, promoting a clean visual appearance. The selection of materials is crucial for maintaining the health and sustainability of the vegetation over time, allowing the project to thrive as part of the urban landscape.

Incorporation of Nature

Vertical Spring moves beyond the boundaries of conventional urban development. Its design allows for adaptation to various building forms while placing a strong emphasis on ecological consideration. The result is a living environment that encourages interaction between people and nature. The project symbolizes a shift in how cities can grow—combining architecture with vibrant green spaces that enhance the quality of life. It reflects the potential for urban areas to include more greenery, making them not just places to live or work, but spaces that actively engage with nature.

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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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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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