Resource City: A 120-Meter Tower That Makes Cairo's Waste Visible

What happens when a city stops hiding its waste and starts building around it? In Cairo's Manshiyat Naser, an informal community of waste collectors known as the Zabbaleen has operated one of the world's most efficient recycling networks for decades, largely invisible to the broader city. Resource City proposes a 120-meter tower that pulls this labor into full public view, stacking waste delivery, material sorting, upcycling workshops, retail, and recycling into a single vertical structure that functions as infrastructure, marketplace, and civic landmark simultaneously.

Designed by Carolin Renno with mentors Lance Hosey and Jeff Kovel, the project was selected as an Editor's Choice entry in the Tinker Project competition. Rather than burying recycling operations in a peripheral industrial shed, the proposal positions the tower at the edge of Manshiyat Naser, where it becomes a threshold between the community's material economy and the wider city. It is a provocation: waste management reimagined as public architecture.

Three Volumes Stacked Into a Vertical Ecosystem

The tower's program is organized into three principal volumes. The lowest handles logistics: waste and recoverable materials arrive, get stored, and are allocated for processing, while a public foyer introduces visitors to the building's material flows. Above, a second volume houses upcycling workshops, sales areas, and workplaces where production happens in full view. Visitors can watch recycled objects being made, purchase them, and participate in creative activities. The upper volume is the most technically specific, divided into four streams for plastic, metal, glass, and paper, each following its own sequence from sorting through processing to storage and exhibition.

The interior renderings reveal how these zones overlap with public life. A glazed gallery wall looks directly onto a pile of recycled materials, collapsing the distance between viewer and process. Nearby, polished concrete floors and geometric pink wall panels frame an exhibition and retail space where clothing racks and displayed objects sit comfortably alongside industrial infrastructure. The message is clear: discarded material is not waste, it is an urban resource with economic, cultural, and educational value.

Exposed Structure as Industrial Identity

Resource City makes no attempt to disguise its industrial function. Large reinforced-concrete lattice girders, diagonal bracing, and open floor plates are left exposed, turning structure into legible expression. The perforated metal wall panels that wrap portions of the facade filter light into dappled patterns across interior surfaces, as seen in the circular reflecting pool where shadows play across water. It is a building that treats its engineering as ornament, using the raw materiality of concrete, steel, and perforated metal to communicate what happens inside.

At ground level, the elevated concrete mass hovers above a busy market scene where oxen and vendors operate beneath bold diagonal bracing. The raised structure creates covered public space without consuming the ground plane, a critical move in a neighborhood where density is already extreme. The building's silhouette responds to nearby urban heights and the profile of the Moqattam Mountain, fragmenting its upper mass into four distinct parts that echo both the surrounding irregular fabric and the four recycling streams within.

Material Processes as Spatial Sequences

Each of the four recycled materials follows a precise spatial sequence through the upper volume. Plastic moves from sorting and color separation through shredding, washing, drying, and transformation into granules. Glass is collected, washed, dried, shredded, and melted. Metal and paper follow analogous chains organized around their specific processing requirements. These technical sequences are not sealed behind industrial walls; exhibition spaces are threaded through them, allowing visitors to track a material from discarded object to reusable product. The section drawing captures the full ambition: a tower with diagonal bracing rising from a podium, an adjacent tensile canopy extending the building's reach into the surrounding neighborhood.

The covered walkway rendered with perforated metal screens and timber beams suggests how the building meets the ground and the community. Construction workers in safety vests occupy the frame, a reminder that the proposal is conceived not as a sleek tech campus but as a working facility built by and for the people who already operate Cairo's recycling economy. The compression of an entire industrial complex into a vertical footprint is both pragmatic, reducing land consumption in a dense neighborhood, and symbolic. The tower stands as a civic monument to labor that most cities prefer to ignore.

Why This Project Matters

Resource City challenges one of architecture's most persistent blind spots: the refusal to engage with waste as a design problem. Most cities externalize their garbage, shipping it to landfills or incinerators sited far from affluent neighborhoods. This proposal inverts that logic entirely, placing waste processing at the center of public life and treating the people who do this work as essential urban actors rather than invisible laborers. The building is not a monument to sustainability branding; it is a functional interface between material flows and civic participation.

What makes the project compelling beyond its social ambition is the architectural discipline with which it is organized. The vertical stacking is not arbitrary but follows the logic of material processing, moving from raw input at the base to refined output at the top. The structural expression is not aesthetic posturing but a direct consequence of spanning large industrial floor plates. And the fragmentation of the upper mass is not formalism but a response to context, program, and the need to break down an enormous building into something that belongs at the edge of Manshiyat Naser. Resource City demonstrates that sustainable architecture, when it is honest about labor, materials, and social relationships, can produce buildings of genuine civic power.

View the Full Project

About the Designers

Designers: Carolin Renno, Lance Hosey, Jeff Kovel

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Project credits: Resource City by Carolin Renno, Lance Hosey, Jeff Kovel Tinker Project (uni.xyz).