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Thermal Inertia and Glazed Sunspaces in a Greenhouse-Restaurant Blend

Authors:
Martin Avila, Mariana Bernal, Valeria Moreno
Thermal Inertia and Glazed Sunspaces in a Greenhouse-Restaurant Blend
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Constructed with thermal inertia walls and integrated glazed sunspaces, this design harmonizes with the Northeast Iceland landscape to serve as a greenhouse and restaurant.
5 key facts about this project
01
Incorporates thermal inertia walls for improved energy efficiency.
02
Features glazed sunspaces designed to capture natural light.
03
Utilizes a dual volume approach with distinct greenhouse and restaurant functions.
04
Draws inspiration from traditional turf houses to integrate with the landscape.
05
Includes a partially buried structure to enhance thermal stability.

The project is situated in Northeast Iceland, where the landscape plays a significant role in its design. It features two main volumes: a greenhouse and a restaurant. The concept emphasizes the relationship between buildings and their natural surroundings, focusing on sustainability and ecological awareness. The goal is to integrate the architecture into the landscape while enhancing the experience for users.

Orientation and Spatial Organization

The restaurant is located to the southwest, allowing for extensive views of the Hverfjall volcano. This orientation provides a visual focal point for visitors. Service areas are carefully positioned in directions that minimize exposure to cold winds, ensuring comfort throughout the space. The entrance plaza is defined by high walls that shield the building from harsh air, leading to a covered atrium. This atrium serves multiple purposes and encourages social interaction among visitors.

Bioclimatic Strategies

Attention to bioclimatic techniques is evident in the design. Living spaces are oriented to maximize sunlight, while walls are constructed with high thermal inertia to reduce heat loss. Portions of the structure are partially buried to create a stable indoor climate. Vegetated roofs contribute to energy efficiency and provide additional insulation. Outdoor areas are designed to create sheltered spaces, offering respite from wind and cold.

Connection to Nature

The design enhances the connection between indoor and outdoor spaces. Glazed sunspaces allow natural light to enter, providing warmth during colder months. This approach creates a welcoming atmosphere and comfort throughout the year, making the interior more inviting.

Vernacular Architecture Influence

The project draws inspiration from traditional turf houses, reflecting local architectural practices. Softly sloping roofs mirror the contours of the landscape and provide practical protection from the wind. This design choice reinforces the connection to the site and highlights the project's commitment to blending with its environment.

The careful integration of form with the landscape allows for a harmonious relationship between nature and architecture. Light and shadow play across the building's surfaces, enriching the experience of both the design and the surrounding environment. This thoughtful approach creates spaces that invite exploration and engagement with the landscape, ensuring that the architecture complements rather than competes with its natural context.

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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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100,000€ Prize / 2025 ideas COMPETITION
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