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Translucent Polycarbonate Cabin with Integrated Rainwater System

Authors:
Marina Parsekian, Thiago Ribeiro, Isabella Molina, Vitor Martins
Translucent Polycarbonate Cabin with Integrated Rainwater System
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With a system of pivot doors that seamlessly connects its polycarbonate envelope to the surrounding forest, the cabin incorporates rainwater collection and lush greenery to create a functional space for meditation.
5 key facts about this project
01
The cabin features a unique system of floor-to-ceiling pivot doors for varied engagement with nature.
02
Utilizes a translucent polycarbonate envelope to optimize natural daylight and enhance interior ambiance.
03
Integrates a rainwater collection system for irrigation of indoor plants, promoting sustainability.
04
Includes removable flower vases on handrails to encourage interaction with the outdoor environment.
05
Designed with a modular wood structural system for efficient assembly and reduced waste.

The Lighthouse Cabin, known as the Tiny Kiwi Meditation Cabin, is a thoughtfully designed space located in a forested area conducive to meditation. Its purpose is to create environments where people can reflect and connect with nature. The design concept focuses on adaptability, allowing users to choose between a communal experience and a moment of solitude. A distinctive feature of the cabin is the use of large doors that open the interior to the outside world.

Design Intent

The main idea behind the design is to strike a balance between openness and privacy. The cabin incorporates floor-to-ceiling pivot doors that serve as a connection to the environment. These doors can be opened to let in fresh air and natural sounds, enhancing the meditation experience. When closed, they offer a retreat, allowing individuals to focus without distractions from the outside.

Spatial Configuration

The cabin's layout features two levels, with the ground floor designated for meditation and the mezzanine used for functions such as storing materials and processing natural essences. This arrangement supports efficient use of space while ensuring access to natural light and ventilation. The translucent envelope of the building plays a vital role in this design, allowing daylight to filter through and creating a calm atmosphere inside.

Sustainability and Resource Management

Sustainability is an essential aspect of the design. The cabin includes a system that collects rainwater from its roof, directing it to a storage area beneath the ground floor. This water is then used to irrigate plants on the mezzanine, promoting an eco-friendly approach to resource use. The cabin also features removable flower vases on the handrails, encouraging interaction with the natural surroundings and allowing occupants to engage with their environment.

Material Use and Construction

In terms of materials, polycarbonate sheets are employed for the cabin’s outer layer. These materials help to manage the amount of light entering the space while allowing the play of light and shadows from surrounding trees. The structure is built using a wood framework designed for modular assembly. This choice simplifies construction and reduces waste, as parts can be pre-cut for efficient installation. The fireplace is central to the cabin's function, providing warmth and generating electricity for lighting, merging practicality with comfort.

The inclusion of elements like removable flower vases enhances the experience. They invite users to personalize the space and strengthen the relationship with the outdoors, making each visit to the cabin unique.

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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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