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Volcanic Stone Facade and Grass Roofs Supporting Sustainable Dining in Iceland

Authors:
Horacio Goitre, Gonzalo Zegarra, Mateo Peschiera, Mariana Nájar
Volcanic Stone Facade and Grass Roofs Supporting Sustainable Dining in Iceland
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Constructed with volcanic stone and topped with grass roofs, the design integrates local materials to create a sustainable dining experience that emphasizes community and environmental sensitivity in Iceland.
5 key facts about this project
01
Constructed with volcanic stone, enhancing insulation and environmental integration.
02
Features grass roofs to blend with the natural landscape and provide thermal efficiency.
03
Includes a cultivation lab dedicated to pesticide-free agricultural practices.
04
Design incorporates expansive views of Hverfjall volcano and Mývatn Lake.
05
Community-focused plaza fosters social interaction and engagement among visitors.

The Volcánico Greenhouse Restaurant is located in Iceland, where it connects with the surrounding landscape while offering both dining and agricultural experiences. The design concept features two primary structures that focus on food production and hospitality. Incorporating traditional Icelandic architectural elements alongside modern practices, the project reflects the local culture and addresses environmental concerns.

Architecture Concept

The layout consists of two distinct volumes: one for the restaurant and another for the cultivation lab. This allows for efficient use of the site's natural features, creating a functional connection between the two. A central plaza encourages social interaction, serving as a gathering space for visitors. Observation decks and fire pits enhance the outdoor atmosphere, promoting a blend of indoor and outdoor experiences.

Materials and Techniques

The construction relies on traditional materials such as volcanic stone, earth, and grass roofs. These elements provide essential insulation and are well-suited to the harsh Icelandic climate. The incorporation of reinforced concrete and prefabricated metallic structures ensures durability and efficiency in the building process while maintaining ties to local architectural methods.

Landscaping and Sustainability

Landscaping is designed to incorporate native vegetation, helping the project blend into its natural surroundings. The initiative aligns with Iceland's environmental goal of increasing forest cover. The cultivation lab focuses on sustainability by operating without carbon emissions and avoiding pesticides. This approach creates a cycle of agricultural production that supplies fresh ingredients to the restaurant.

Design Details

The eastern facade features a wall made from volcanic lava stone, enhanced with moss-like plants that offer insulation and visual interest. This aspect of the design fosters a connection between the building and the landscape. The expansive views from the remaining facades frame significant landmarks, such as the Hverfjall volcano, reinforcing the relationship between the architecture and its geographic context.

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The Next House: USA — A Global Call to Reimagine the American Suburb

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Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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