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Personal Retreats with Cross-Laminated Timber and Indoor Gardens

Author:
Archontia Manolakelli
Personal Retreats with Cross-Laminated Timber and Indoor Gardens
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A series of personal pods crafted from cross-laminated timber, surrounded by indoor gardens, offer quiet retreats atop Tokyo's rooftops, enhancing well-being through a direct connection to nature.
5 key facts about this project
01
Personal pods are located on rooftop spaces, maximizing urban views while providing privacy.
02
The design incorporates a rotating external envelope, allowing users to adjust their connection to the outside.
03
Cross-laminated timber construction promotes a warm aesthetic while ensuring structural integrity.
04
Each pod includes a mini indoor garden, enhancing air quality and promoting relaxation.
05
The project emphasizes mindfulness through its intimate, nature-inspired environments.

Cavern in the Sky is located in the bustling urban environment of Tokyo. It aims to improve the connection between people and nature in a city that often feels removed from the natural world. Individual pods serve as retreats for personal reflection and relaxation. Inspired by the comforting forms of canyon caves, the design offers a unique space where users can find peace amidst the urban noise.

Design Concept

The concept of the pods is grounded in research from Environmental Psychology, which highlights the stress that urban living can impose. Each pod, measuring 2000mm by 2000mm, is carefully placed on rooftops of tall buildings. This positioning not only provides clear views of the surrounding scenery but also protects the privacy of those using the space. The design encourages individuals to engage in self-reflection, allowing them to experience a sense of calm away from the city's chaos.

Materials and Structure

Cross-laminated timber is a key material used in the construction of the pods. It provides strength while also giving the interior a warm, natural look. This choice supports the overall design intent of creating an inviting atmosphere reminiscent of natural cave formations. The use of this material allows the pods to be easily built and integrated into existing urban settings.

External Envelope and User Experience

A noteworthy feature of the pods is their rotating external envelope. Users can adjust this envelope to control how much of the outside world they want to experience. They can choose to be completely secluded, partially exposed, or fully engaged with their surroundings. This flexibility personalizes the experience, accommodating different comfort levels in a shared urban space.

Indoor Garden Integration

Each pod is surrounded by a mini indoor garden, which enhances the experience of being in a natural setting. Adding greenery not only beautifies the space but also improves air quality, creating a more pleasant atmosphere. The garden provides a sensory experience that contributes to relaxation and meditation, making the pods truly feel connected to nature.

Inside, the pods are designed with minimal light and natural textures. This creates a quiet space, encouraging mindfulness and personal reflection while providing a needed retreat from the fast pace of urban life.

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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 €
Eligibility Open to all
Final registration deadline 30 October 2025

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