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Frost Flower Facade with Cross-Laminated Timber and Local Lava Rocks

Author:
Teemu Rantanen
Frost Flower Facade with Cross-Laminated Timber and Local Lava Rocks
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A facade inspired by frost flowers enhances the interaction of natural light within a structure built from cross-laminated timber and local lava rocks, serving as a multifunctional greenhouse resort in Iceland.
5 key facts about this project
01
A unique frost flower pattern on the facade enhances light interaction.
02
Cabins serve as both accommodation and greenhouse spaces.
03
Utilizes geothermal energy for sustainable heating solutions.
04
Local lava rocks are integrated into the exterior as cladding.
05
The project incorporates cross-laminated timber for structural elements.

The Vogafjos greenhouse resort is located in the dramatic landscape of Iceland, near Hverfjall Volcano. It combines several functions, including a restaurant, accommodation, and a greenhouse for growing food. The overall design aims to connect closely with the surrounding nature, using a flowing form that reflects the patterns of the landscape.

Functions and Layout

The resort features a thoughtful arrangement of spaces that enhance its practical use. Key areas include Greenhouse 1, which spans 1,900 square meters, a dining area of 330 square meters, and a multipurpose hall measuring 270 square meters. An additional greenhouse designated for reservations is 1,500 square meters. The project also includes three Greenhouse Cabins, totaling 300 square meters, which offer a unique experience by integrating living spaces with agricultural functions.

Material Choices

Sustainability plays a crucial role in the selection of materials. The main structure is made from cross-laminated timber, which is sourced from local forests. This choice supports the local economy and minimizes transportation emissions. Local lava rocks are used for the exterior walls, creating a connection to the volcanic landscape. The roof employs polycarbonate panels, allowing natural light to enter while providing good thermal insulation for energy efficiency.

Innovative Design Features

Each Greenhouse Cabin is designed to host up to five people, providing guests an immersive experience in a living greenhouse. This unique feature enables the cultivation of fresh produce, reinforcing the idea of self-sufficiency. The facade showcases a pattern inspired by frost flowers, which not only adds visual interest but also interacts uniquely with light throughout the day.

The integration of these elements results in a building that closely connects with its environment. Guests can enjoy expansive views while experiencing a functional space that underscores the beauty and complexity of Icelandic nature.

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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.

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Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
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