Get inspired!

17,725 architecture projects

Learn from past Buildner architecture competition participants through our extensive project library, curated over more than 15 years!

Geothermal Heating and Hydroponic Cultivation in a Sustainable Greenhouse Eatery

Author:
Maciej Galewski
Geothermal Heating and Hydroponic Cultivation in a Sustainable Greenhouse Eatery
Explore the full project presentation!
Subscribers only
Utilizing geothermal heating and hydroponic cultivation, the structure serves as a sustainable greenhouse eatery that offers guests a unique dining experience intertwined with the cultivation of food in the stark beauty of Iceland's landscape.
5 key facts about this project
01
Utilizes geothermal energy for heating without greenhouse gas emissions.
02
Incorporates a closed water circuit system to recycle wastewater from plant growth.
03
Features an atrium ventilation design to maintain indoor air quality discreetly.
04
Integrates hydroponic cultivation to ensure year-round plant growth.
05
Positioned to enhance views of the Hvjerfall volcano and Lake Myvatn.

The Greenhouse Eatery at the Hill integrates restaurant functions within a greenhouse context, situated in the unique lunar landscape of northern Iceland. The design aims to connect with the environment, offering views of the Hvjerfall volcano and Lake Myvatn for its visitors. The concept merges culinary and botanical experiences, enabling guests to witness the growing process of the plants while they dine.

Design Concept

The structure serves as both a restaurant and a conservatory. This dual purpose enhances the dining experience and educates visitors about sustainable practices in food cultivation. The architecture focuses on energy efficiency and the use of local resources, providing a model for responsible design in challenging conditions.

Sustainability Measures

Energy sustainability is achieved through the use of Icelandic geothermal energy for heating, which helps reduce greenhouse gas emissions. The partially underground design takes advantage of thermal mass from the soil, acting as natural insulation that lowers energy consumption. These strategies showcase a dedication to sustainable practices throughout the building's design.

Water Management

Water management is an essential part of the design. Wastewater generated from the cultivation process is recycled, creating a closed water circuit that minimizes environmental impact. Additionally, the building collects melted snow from the heated roof, further enhancing its water efficiency during the harsh Icelandic winters.

Future Expansion Plans

Future plans look to expand the greenhouse areas, using the flat terrain of the hillside. This growth will preserve the views of both the Hvjerfall volcano and Lake Myvatn, ensuring that the new spaces remain connected to the landscape. This careful planning keeps the building in harmony with its surroundings, enhancing the original intent of the design.

Large glass panels allow sunlight to fill the interior, creating a bright and inviting atmosphere. The design reflects a thoughtful interaction between the building and its natural environment, encouraging visitors to enjoy both food and nature together.

Noticed a mistake?
Highlight the text and click on
Noticed a mistake

Enter an open architecture
competition now

The Home of 
Shadows
The Home of Shadows
The light studies. Edition #4
The Next House: USA
The Next House: USA
20,000 USD Prize
The Architect's 
Chair
The Architect's Chair
Take a seat and make a statement! Edition #5
Kinderspace
Kinderspace
Architecture for Children’s Development #3
The Architect’s 
Stair
The Architect’s Stair
Take a step and make a statement! Edition #3
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

`
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

Open architecture competitions

  • Closest deadline first
  • Project competitions first
    Selected winning projects have the potential to be constructed
  • Ideas competitions
    Experimental competitions with the focus on pushing the boundaries of creativity
new
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
new
Iceland 
Slow Sauna

Design slow sauna in Iceland

project COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 26 November 2025
Concrete 
Pavilion

Design a concrete pavilion

Edition #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Final registration deadline 27 November 2025
new
Pavilion Atlas 2026

Design a story of your country

ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 21 January 2026

Recurring architecture competitions

new
The Home of 
Shadows

Design a home with no artificial lighting

The light studies. Edition #4 ideas COMPETITION
Prize Monetary award
Eligibility OPEN TO ALL
Early bird registration deadline 5 November 2025
The Last 
Nuclear Bomb Memorial

Design a memorial that speaks to the cause of ending all nuclear weapons programs

Edition #6 ideas COMPETITION SILENT CONTEST For this competition, NO DESCRIPTION TEXT is allowed. The architecture ideas must be communicated strictly with visuals.
Prize Monetary award
Eligibility Open to all
Final registration deadline 13 November 2025
new
The Architect's 
Chair

Take a seat and make a statement!

Take a seat and make a statement! Edition #5 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Early bird registration deadline 20 November 2025
Hospice - 
Home for the 
Terminally ill

Design a safe and supportive space to those struggling with a terminal illness

Edition #5 ideas COMPETITION
Prize 10,000 €
Eligibility Open to all
Final registration deadline 26 November 2025
Kinderspace

Design a kindergarten of tomorrow

Architecture for Children’s Development #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Final registration deadline 26 November 2025
Museum of 
Emotions

Use architecture to create different emotional states

Edition #7 ideas COMPETITION SILENT CONTEST For this competition, NO DESCRIPTION TEXT is allowed. The architecture ideas must be communicated strictly with visuals.
Prize Monetary award
Eligibility Open to all
Final registration deadline 27 November 2025
Re:Form - 
New Life 
for Old Spaces

Choose a site—used, abandoned, or forgotten—anywhere in the world, and give it a new purpose

Edition #2 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 3 December 2025
The Architect’s 
Stair

Take a step and make a statement!

Take a step and make a statement! Edition #3 ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 15 January 2026
new
Buildner's Unbuilt Award 2026

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2026 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Early bird registration deadline 26 February 2026

Media, partners and clients

To view this project in detail,
please log in with your
Architects’ Network Plus account.
Subscription instantly unlocks all the architecture projects plus other member-only benefits:
  • Access the 17,725 Concept Library
  • Professional tools including file transfer, email, portfolio management, and more
Register now
Already a member? Log in

This website uses cookies to improve user experience and gather usage statistics.

More information is available in our Privacy & Cookie policy