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Floating Greenhouses with EPS Framework for Urban Ecology

Authors:
Jovana Stefanović, Viktorija Čeliković, Željko Mijušković, Nikola Stanišić
Floating Greenhouses with EPS Framework for Urban Ecology
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Featuring an innovative EPS framework, floating greenhouses enhance both ecological restoration and public access along Belgrade's waterfront, providing vital communal spaces for interaction and recreation.
5 key facts about this project
01
Floating structures designed to adapt to changing water levels.
02
Incorporation of a closed EPS cell system for buoyancy and insulation.
03
Maximized sunlight absorption through varied geometric forms.
04
Use of polyurea for enhanced durability against environmental exposure.
05
Community-focused layout encourages public interaction and engagement.

Aquaville is an architectural design located along the Belgrade waterfront, where the Sava and Danube rivers meet. The aim is to address urban planning issues while improving public access to the waterside. Mini floating greenhouses are introduced as part of the landscape, drawing on local splavovi culture, where rafts are often used for social gatherings. The design emphasizes sustainability and community involvement, focusing on restoring the natural environment.

Materiality

At the core of Aquaville’s structure is expanded polystyrene, often referred to as EPS. This material is lightweight, made up of about 98% air within a network of closed cells. It provides the necessary buoyancy for floating elements while also being environmentally friendly. The design incorporates protective coatings of concrete and polyurea, offering additional durability against environmental wear and tear. This thoughtful combination of materials helps ensure long-term performance while contributing to energy efficiency.

Sunlight Optimization

The buildings in Aquaville are designed to make the most of natural light. The cube form allows sunlight to penetrate about 30% of its surfaces, while the cylindrical shape increases this to roughly 70%. The half-spherical design maximizes sunlight exposure, reaching an absorption rate of 85%. By prioritizing daylight, the architecture not only improves energy efficiency but also enhances comfort within the spaces.

Community Engagement

Aquaville addresses the challenge of limited urban spaces by creating shared public areas. Replacing existing nightclubs with eco-friendly structures, the project encourages community interaction and provides new recreational zones. This initiative emphasizes the need to connect city dwellers with nature, fostering a sense of belonging and enhancing the overall urban experience.

The design culminates in a series of thoughtfully arranged floating greenhouses that offer practical benefits while being visually appealing, contributing to the ecological revitalization of the riverside and inviting sunlight into everyday life.

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

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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?

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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.

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