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Hanging Gardens and Honeycomb Structure in a Sustainable Urban Community Hub

Author:
Rikky Falantino
Hanging Gardens and Honeycomb Structure in a Sustainable Urban Community Hub
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A series of hanging gardens supported by a honeycomb structure defines a sustainable community hub in Tokyo, designed to foster social interaction and access to educational resources.
5 key facts about this project
01
Hanging gardens are strategically integrated throughout the structure, enhancing biodiversity and user experience.
02
The honeycomb structure provides improved seismic resilience suitable for Tokyo's earthquake-prone environment.
03
Extensive use of cross-laminated timber panels contributes to sustainable construction practices and reduced carbon footprint.
04
A fluid layout encourages flexible use of spaces, allowing for a variety of community activities and engagement.
05
The design incorporates large glass sections to maximize natural light and foster a strong connection with the urban landscape.

### Overview
The project is located in Tokyo, Japan, in a densely populated urban area characterized by a mix of traditional and contemporary influences. Its design is intended to resonate with the cultural context of the city while addressing its specific environmental and social dynamics. The architecture aims to serve as a cultural hub that encourages community interaction and engagement through its various programs and spaces.

### Spatial Strategy
The architectural configuration emphasizes connectivity at both social and spatial levels. Designed to facilitate community interaction, the building incorporates multiple levels and flexible spaces that can adapt to various uses, including libraries, computer labs, and multipurpose halls. The ground floor serves as a public forum, featuring amenities such as cafes and workshops, thereby enhancing accessibility and encouraging engagement with the surrounding community. Innovative staircases connect the different levels, promoting movement while adding a sculptural quality to the interior.

### Material & Structural Considerations
The design employs a diverse palette of materials to balance strength, transparency, and resilience. A structural framework of steel beams provides stability, while expansive glass facades allow natural light to permeate the interior, seamlessly blending indoor spaces with the urban environment. The use of concrete not only contributes to the building's aesthetic but also reinforces its structural integrity. An innovative honeycomb flooring system enhances earthquake resilience, allowing for adaptable configurations in response to emergencies. Additional features include metal chains that support hanging gardens, which promote biodiversity and create inviting interstitial spaces for relaxation and social interaction.

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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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