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Translucent Etfe Skin and Solid Dark Stone Create Harmonious High-Altitude Retreat

Authors:
Xuan Tung Dang, Duc Tuyen Le, Kim Ngan Dang, Nhat Huy Dang
Translucent Etfe Skin and Solid Dark Stone Create Harmonious High-Altitude Retreat
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Constructed with a transparent ETFE skin and robust dark stone, the architectural design provides a sustainable refuge that seamlessly integrates into the high-altitude Himalayan landscape, catering to the needs of trekkers and nature enthusiasts.
5 key facts about this project
01
Constructed with a transparent ETFE membrane that optimizes natural light while maintaining insulation.
02
Incorporates locally sourced dark stone for enhanced thermal mass and durability against harsh weather.
03
Features a water collection system that captures glacial melt for sustainable usage within the facility.
04
Designed with a unique aerodynamic form to blend seamlessly into the Himalayan landscape.
05
Includes communal spaces that promote social interaction among visitors while offering private retreats.

## Overview

Located in the Himalayas, the Milkyeyes architectural design project seeks to enhance the visitor experience within a high-altitude context characterized by challenging climatic conditions. This site serves as a resting area for trekkers while facilitating a deeper connection with the natural environment. The design integrates functional architectural forms with the landscape, addressing both the practical needs of visitors and the cultural significance of the area.

## Architectural Forms

The project features two distinct structures: the Sky Hut and the Earth Hut, each designed to respond to the unique environmental conditions and spatial requirements.

- **Sky Hut** is characterized by its aerodynamic form and extensive use of transparent materials, which optimize views of the night sky and foster a connection to the natural surroundings. This structure accommodates shared living spaces, private guest rooms, and communal areas, promoting social interaction among visitors. Warm wood finishes enhance the interior environment, creating a sense of comfort amidst the towering landscape.

- **Earth Hut**, in contrast, is designed to blend into the terrain, utilizing local stone materials that provide thermal mass and durability. Its angular form adapts to the rugged landscape, offering shelter and creating a more intimate experience with the earth.

## Materiality and Sustainability

The selection of materials plays a critical role in the project's function and aesthetic appeal. Key materials include:

- **Dark Stone** is used for its structural integrity and thermal properties, contributing to insulation while grounding the design in its geographical context.

- **ETFE (Ethylene Tetrafluoroethylene)** is employed in the Sky Hut's roofing, allowing natural light to permeate while maintaining energy efficiency and durability.

- **Wood Finishes** provide a tactile warmth that enhances the indoor experience, ensuring comfort for residents.

An integrated **water collection system** further exemplifies sustainability efforts, capturing glacier meltwater and managing resources effectively in this high-altitude setting. Solar panels installed on the roofs harness renewable energy, reinforcing the project's commitment to environmentally responsible practices.

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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
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