HEDRON.
Fish From the Sky With Diamonds. Geodesic Hydroponic - Aquaponic Farm.
2011
Hedron is an aquaponic rooftop greenhouse designed to enable food production on generic flat roofs without requiring structural modification of existing buildings. The project addresses one of the main constraints of rooftop agriculture: the concentration of loads associated with water tanks and farming equipment.
Through the use of a geodesic dome structure, the weight of the fish tanks is distributed across a larger surface area and transferred to the perimeter of the greenhouse frame. This structural strategy allows the system to be installed on a wide range of rooftops, expanding the potential sites for urban food production beyond purpose-built facilities.
The greenhouse is optimized for aquaponic farming techniques, in which fish and plants operate within a closed ecological loop. Water enriched by fish waste is used to nourish the plants, while the plants simultaneously filter and clean the water before it is returned to the fish tanks. This reciprocal system enables the continuous production of vegetables and fish within a compact footprint.
Hedron integrates a passive cooling and ventilation system designed to reduce energy consumption while filtering polluted urban air. By preventing direct exposure of the crops to airborne contaminants, the greenhouse establishes a protected growing environment within the dense urban atmosphere. The system is estimated to produce up to ten kilograms of fresh crops per day, sufficient to support the dietary needs of multiple households year-round.
Displace - Hedron displaces agriculture from horizontal ground-based territories to the vertical surfaces of the city. By relocating food production onto rooftops, the project challenges the historical separation between agricultural land and urban development, redefining buildings as active sites of cultivation rather than passive containers. This displacement is structural and spatial, not symbolic: the city itself becomes part of the productive landscape.
Expose - The project exposes the technical, environmental, and structural constraints that have traditionally limited rooftop farming. By addressing load distribution, air pollution, and climatic control through design, Hedron renders these constraints explicit and negotiable rather than hidden obstacles. Exposure here operates through feasibility: the project makes visible what is required for rooftop agriculture to function at scale.
Activate - Hedron activates underutilized rooftops as productive infrastructures capable of supporting food systems, ecological cycles, and domestic consumption. Although conceived as a prototype and feasibility study, the project activates a new imaginary in which rooftops are understood as latent resources embedded within the urban fabric. Activation occurs at the level of possibility: Hedron enables buildings to be read as potential farms, even in the absence of immediate realization.
Hedron does not propose a singular architectural object, but a transferable system.
By combining structural redistribution, aquaponic cycles, and environmental control, the project frames rooftop agriculture as an infrastructural question rather than a stylistic or technological novelty.
Collaborators: Arch. Stefano Massa.
Technical Support: Francesco Orsini (agronomist)
Dtructural EngineeringIng: Remo Ricchetti
Aquaponics: Urban Farmers AG













