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Lava Rocks and Geothermal Heat Captured in a Multifunctional Space

Author:
Bingjun Chen
Lava Rocks and Geothermal Heat Captured in a Multifunctional Space
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Built with locally sourced lava rocks and designed to leverage geothermal heat, the facility offers a multifunctional space for visitors to engage with the landscape while reflecting on the interplay between fire and ice.
5 key facts about this project
01
Utilizes geothermal heat to maintain a stable indoor climate.
02
Features a ventilation window designed to resemble a volcanic crater.
03
Incorporates locally sourced lava rocks for structural integrity.
04
Includes a dedicated meditation room for environmental reflection.
05
Offers direct views of Hverfjall Volcano from multiple areas.

The Glacier Cafe is located at the base of Hverfjall Volcano in Iceland, a site that captures the natural beauty characteristic of the country. It functions as a space for visitors to gather, enjoy refreshments, and engage with the stunning landscape. The design draws on themes of volcanic activity and glacial formations, aiming to create a dialogue between these two powerful forces of nature.

Architectural Concept

The design responds to the site's unique conditions by embracing the contrasting elements of fire and ice. By facing the building toward Hverfjall Volcano, the layout allows visitors to take in the views while fostering a connection to the land. The structure includes various practical areas, such as a parking lot, an open-air stage, a coffee shop, a meditation platform, a multipurpose room, and an exhibition hall. This arrangement supports a range of activities and enhances the overall experience for those who visit.

Sustainability Measures

Attention to sustainability is a key component of the design. The building avoids opening windows, which helps control the indoor climate and reduces energy use. A half-dug basement takes advantage of the geothermal heat from the volcano, maintaining a comfortable temperature inside. Additionally, the top of the building features a ventilation window that mimics a volcanic crater, allowing for airflow while also bringing in natural light.

Material Selection

Materials used in the construction include locally sourced lava rocks, which resonate with the geological identity of the area. Concrete is another material chosen for its strength and longevity. These selections reflect a commitment to authenticity and sustainability and ensure that the building is well integrated into its surroundings.

Design Details

Inside, the meditation room invites visitors to reflect on their connection to the natural landscape. This peaceful space encourages thoughtfulness about the relationship between nature and human life. Light filtering through the ventilation window creates a calming environment, allowing for quiet contemplation while offering views of Hverfjall Volcano. The design seeks to enhance visitors' awareness of the beauty and power of the environment surrounding them.

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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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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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