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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 Next House: USA — A Global Call to Reimagine the American Suburb

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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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