Experience Sustainable Travel Like Never Before with KOJA by Polestar: The Micro Space Tree House
Escape to Nature and Minimize Your Environmental Impact with KOJA, the Futuristic Eco-Friendly Accommodation Solution
Polestar, the Swedish electric performance car brand, is reimagining sustainable travel with KOJA*, a micro space tree house designed by Finnish designer Kristian Talvitie. The design received an honourable mention in the 2021 Polestar Design Contest. Preparing for the launch of the 2022 contest, Polestar decided to bring KOJA to life.
Built in the village of Fiskars, an art and design hub in southwestern Finland, KOJA is the first submission from the Polestar Design Contest to be realised in a full scale.
KOJA is part of the ‘House by an Architect’ exhibition during the Fiskars Village Art & Design Biennale, open from May to September 2022.
“We were fascinated by the idea and how it translates our brand values into a different environment. That was key for us, and we were so impressed that we decided to build it,” says Maximilian Missoni, Head of Design at Polestar.
A response to the 2021 Polestar Design Contest theme of “progress”, KOJA redefines sustainable travel by reducing the need for travel in the first place, yet still bringing people closer to nature. Attached to a tree trunk just below the canopy, the design maximises the treetop view with a panoramic glazed façade. A rich, immersive experience in a natural environment. KOJA connects to the growing micro space trend and this tree house is accessible for people who would otherwise take a much longer trip to experience the wilderness. KOJA encapsulates both Polestar design language and sustainability values, minimising the use of material and energy while maximising the experience.
“Most designers look at the design from a user perspective,” says the designer of KOJA, Kristian Talvitie. “I also look at things from the environment’s perspective. There should be a symbiosis between the design and where it’s encountered.”
To translate the design into reality, Kristian Talvitie has been working closely with the Polestar Design team in Gothenburg, Sweden, and with colleagues at the Finnish design agency Ultra. Created from sustainable and durable materials such as locally sourced wood and wool, KOJA blends in with its natural environment and at the same time creates an eye-catching contrast – much like Polestar’s cars.
*Koja [kåj`a], noun. A Swedish word meaning “hut” or “den”. Shares the definition across multiple languages, from the German “Koje” to the Japanese “こや” (same pronunciation).
Popular Articles
Popular articles from the community
An Miên Lumière Cafe by xưởng xép, Ho Chi Minh City, Vietnam
An industrial-inspired café where layered steel and warm light create a dynamic, immersive environment shaped by reflection, depth, and perception.
Inverted Architecture Installation by Studio Link-Arc: Exploring the Intersection of Architecture and Living Organisms
Inverted Architecture Installation by Studio Link-Arc blends mycelium, sustainability, inverted design, ecological cycles, and urban adaptive architecture in Shenzhen.
Solar Steam: A Climate-Responsive Architecture That Redefines the Monument
A climate-responsive memorial architecture that transforms heat, decay, and time into a living system reflecting humanity’s ecological impact.
Treehouse Apartment: A Warm Timber Interior Blending Craft, Play, and Contemporary Living
Warm timber apartment with integrated treehouse, combining natural materials, craftsmanship, and playful design to create a flexible, family-oriented living environment.
Similar Reads
You might also enjoy these articles
Zhuxi Wonderland: Reimagining Traditional Chinese Gardens by Doarchi Architects
Zhuxi Wonderland by Doarchi Architects reinterprets traditional Yangzhou gardens, integrating courtyards, pavilions, and tea houses in modern cultural design.
Doble Soga House: A Contemporary Brick Residence Rooted in Landscape in Quito, Ecuador
Brick house in Quito integrating nature, flexible living spaces, exposed materials, and rooftop terrace, creating warm contemporary architecture for modern family life.
Al Gharra Mosque in Medina Redefining Contemporary Islamic Architecture
Minimalist Medina mosque using concrete, light, and landscape to reinterpret Islamic worship spaces through symbolic spiritual transitions and contemporary architecture.
Viczonecode Villa by DDconcept – Tropical Family Living in Ho Chi Minh City
Tropical family villa in Ho Chi Minh City featuring courtyards, skylights, natural ventilation, elevated flooring, and seamless indoor–outdoor living surrounded by greenery.
Explore Architecture Competitions
Discover active competitions in this discipline
The International Standard for Design Portfolios
The Global Benchmark for Architecture Dissertation Awards
The Global Benchmark for Graduation Excellence
Challenge to reimagine the Iron Throne





Comments (0)
Please login or sign up to add comments
No comments yet. Be the first to comment!