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Rammed Earth Facades with Geothermal Sustainability for an Elevated Greenhouse Experience

Authors:
Fahmida Ahmed, Rutuja Atre, Seniha Desdemir
Rammed Earth Facades with Geothermal Sustainability for an Elevated Greenhouse Experience
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Constructed with rammed earth facades and powered by geothermal energy, the design elevates the greenhouse experience while seamlessly integrating fresh local produce into its restaurant offerings.
5 key facts about this project
01
Rammed earth facades provide thermal regulation and visual texture.
02
Geothermal heating system enhances energy efficiency throughout the year.
03
Greenhouse dining areas allow guests to enjoy views of growing produce.
04
The project utilizes soil from the site for its construction materials.
05
Strategically placed retaining walls guide visitor flow into the building.

The Iceland Greenhouse Restaurant is located near the Hverfjall Volcano and the Mývatn Nature Baths. It features a design that combines two distinct structures to create an outdoor space for various activities. The building’s layout encourages visitors to engage with the natural surroundings while enjoying the functions of the facility. The project emphasizes the relationship between constructed spaces and the landscape around them, offering a unique and enriching visitor experience.

Design Concept

The design takes advantage of the local topography by merging two different forms. One part of the building is a two-storey bar that is partially below ground. This choice helps it blend in with the landscape. The other part, the greenhouse, sits elevated. This positioning draws attention and invites visitors to discover what lies within. Together, these structures create a contrast that enhances the overall aesthetic and functional appeal of the site.

Visitor Journey

The journey starts as visitors approach from the parking area, guided by a retaining wall leading to the entrance. Upon entering, they find a lobby that features an exhibition space. This area offers educational insights into the geological features nearby. After exploring the lobby, guests ascend to the restaurant level via atrium stairs. The restaurant offers various dining options, each with views of the greenhouse and the natural landscape. This careful arrangement allows for a thoughtful progression through different spaces, adding depth to the overall experience.

Sustainability Strategies

Sustainability is a key part of the design. The project makes use of locally sourced materials to minimize its environmental impact. Rammed earth is used for the facades, made from soil found on site. This approach helps regulate temperature, keeping it warm in winter and cool in summer. Green roofs also contribute to energy efficiency. Furthermore, geothermal heating is incorporated to provide clean energy throughout the building.

Integration with Agriculture

The greenhouse serves a vital role by connecting the dining experience with local agricultural practices. Fresh vegetables and herbs are grown inside and used directly in the restaurant’s kitchen. Several dining spaces are situated within the greenhouse itself, allowing patrons to appreciate the plants around them. Large openings in the walls create visual connections to the outdoors, enhancing the overall ambiance and reinforcing the relationship between the dining experience and the natural environment.

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The Next House: USA
The Next House: USA
20,000 USD Prize
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MICROHOME 2026
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100,000 € Prize Fund / Kingpsan Edition #11
Buildner's Unbuilt Award 2026
Buildner's Unbuilt Award 2026
100,000€ Prize / 2026

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

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Competition organisers

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.

The Next House: USA

Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 19 November 2025

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