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Rainwater Harvesting and Gabled Roofs in a Greenhouse-Restaurant Overlooking Mývatn

Author:
Tigran Marutyan
Rainwater Harvesting and Gabled Roofs in a Greenhouse-Restaurant Overlooking Mývatn
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Incorporating gabled roofs and a rainwater harvesting system, the design emphasizes sustainability while providing a greenhouse and restaurant that enhances views of Mývatn and Hverfjall volcano.
5 key facts about this project
01
Rainwater is collected through a strategic gutter system that feeds into storage tanks beneath the structure.
02
Vertical hydroponic growing systems are integrated to enhance sustainable agriculture practices on-site.
03
The restaurant's orientation is specifically designed to maximize views of Hverfjall volcano.
04
A second storey provides elevated observation areas overlooking Mývatn Nature Baths.
05
The truss design draws inspiration from the Aegishjalmur stave, connecting the building to local cultural heritage.

The project is carefully designed to connect with its environment while focusing on sustainable practices. Positioned on an east-west axis, it takes advantage of sunlight year-round, essential for operating a greenhouse. The building overlooks Mývatn Nature Baths and Hverfjall volcano, placing it within a striking natural context. Its overall concept blends functionality with a design that reflects Icelandic culture.

Building Orientation and Structure

Three gable roofs define the structure. This shape is chosen to maximize sunlight exposure during the summer months, which is important for the greenhouse's operations. The extended volume adds a second storey to the building, offering impressive views of the surrounding landscape while also encouraging interactions among users.

Access and User Experience

A ramp provides access to the restaurant hall, leading visitors through spaces where they can observe vertical hydroponic channel growing systems. This design creates an engaging experience, encouraging a connection with the greenhouse. The ramp ends at an observation deck, allowing for clear views of Hverfjall volcano, enhancing the overall visitor experience.

Functional Spaces and Future Development

The restaurant is a significant part of the design, positioned to focus on Hverfjall volcano, while the kitchen is located below in a shaded area. This placement is efficient for service delivery. Plans have been made for future development, with an additional structure proposed that mirrors the main building to maintain sightlines of the natural landscape. The design clearly separates areas for parking and service, accommodating both current and anticipated needs.

Materiality and Sustainable Systems

Materials in the design include steel and concrete, supporting the structure while promoting durability. Specific elements such as steel I-beams, tubes with screw thread endings, and corrugated steel are highlighted. An effective rainwater management system is implemented, using gutters to capture runoff and directing it to tanks placed beneath the second floor. This approach meets the water needs of both the greenhouse and kitchen while reinforcing a commitment to sustainability.

Cultural influences are present in the design, particularly the use of a truss system inspired by the Aegishjalmur stave. This design element links the building to Icelandic heritage, adding depth to its overall aesthetic. The integration of cultural references enhances the connection to the site's history while supporting the functional and environmental goals of the project.

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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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