Get inspired!

17,725 architecture projects

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

Double-Convex Retreat Constructed with Reclaimed Timber and Photovoltaics Integrating Nature's Canopy

Double-Convex Retreat Constructed with Reclaimed Timber and Photovoltaics Integrating Nature's Canopy
Explore the full project presentation!
Subscribers only
Constructed with double-convex forms and reclaimed timber, this retreat seamlessly integrates photovoltaic energy solutions and natural ventilation into a tranquil space for couples immersed in the surrounding Umbra Forest.
5 key facts about this project
01
Constructed with double-convex geometry to enhance structural stability.
02
Utilizes reclaimed timber for ecological sustainability and local material sourcing.
03
Integrates photovoltaic panels for energy self-sufficiency and minimal environmental impact.
04
Features large glazing to create open views while connecting indoor and outdoor spaces.
05
Includes rooftop access for direct engagement with the forest canopy.

### Project Overview

"The Fireflies Are Back" is located in the Umbra Forest of Gargano, Italy, and has been recognized with the Unbuilt Award 2024 in the Small Wonders category. The design focuses on creating a harmonious relationship between human habitation and the natural environment. Emphasizing sustainability and ecological integration, the project seeks to enhance the user experience while minimizing its impact on the surrounding landscape.

### Conceptual Approach to Nature

This design articulates a novel perspective on experiencing nature, conceptualized as a "space-time metaphor." The architecture facilitates interaction with the natural topography, fostering a symbiotic relationship between its inhabitants and the environment. Intended as a retreat for couples, the structure comprises living spaces while also providing facilities for essential activities, including a charging station for personal devices, thus merging modern utility with ecological awareness.

### Architectural Features and Sustainability

#### Aesthetic and Structural Design

The building is characterized by a double-convex form that reflects organic shapes found in nature, enhancing its fluidity and stability. Positioned large windows optimize natural light and connect indoor living spaces with forest views. The design incorporates a rooftop access hatch, allowing users to engage directly with the forest canopy. The spatial organization includes three distinct levels, each serving functional purposes: the ground level accommodates water harvesting systems, the first level connects occupants with their surroundings through open living areas, and the upper level provides private sleeping quarters with extensive glazing for ambient light and views.

#### Eco-Friendly Materials and Energy Systems

Sustainability is prioritized through the use of various innovative materials. The structure is equipped with photovoltaic panels that generate energy for domestic needs, including heating water. Double-layered wooden planks enhance thermal insulation and structural integrity, while sustainably sourced timber frames support the overall design. Natural ventilation is facilitated by an open layout, promoting airflow and improving indoor climate without excessive reliance on mechanical cooling.

The project also incorporates living walls that encourage local biodiversity and reflects cultural values through its material choices and design aesthetics. Collectively, these design elements create a habitat that respects and integrates with its ecosystem, enhancing the quality of life for its users.

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