Destinesia: A Timber Terrain That Turns the Petite Ceinture into a Public Process

Most proposals for abandoned infrastructure try to finish the job: fill the void, assign the program, close the file. Destinesia refuses that ending. It treats public space as something that never quite settles, a continuous negotiation between people, environment and time, and it gives that negotiation a physical form: a ribbed, undulating structure that rises, dips and folds along a stretch of Paris's forgotten railway ring.

Designed by Cansu Çelik and İshak Şimşek, the project received an Honorable Mention in the Salut Paris competition. Its site is the Petite Ceinture, the disused railway line that encircles the city and survives today as a fragmented urban void. Rather than erasing that history, the designers reinterpret it, placing a linear intervention beside the tracks that occupies only part of the available ground and leaves the rest of the corridor legible as what it once was.

A Ribbed Tunnel That Reads as Landscape Before Building

The opening rendering sets the tone. Layered timber ribs build up into a tunnel-like form running parallel to the rails, yet the figures in the foreground, a photographer and a cyclist, are not entering a building so much as approaching a piece of terrain. The parametric geometry produces a continuous flow rather than a sequence of rooms, and that matters: the structure acts as both enclosure and landscape, guiding movement without dictating it.

Equally telling is what the image leaves alone. The tracks remain exposed and untouched beside the new form. This restraint is the project's sharpest decision. By covering only a portion of the site, Destinesia lets the railway corridor stay part of the experience, closing the communication gap between the city and the line without smothering the line itself.

Stepped Terraces and Carved Passages Built for Unscripted Use

Inside, the ribs resolve into stepped timber terraces that open directly toward the tracks. A mother and child walk toward a group gathered beside a graffiti wall, and the scene captures the project's core claim: interaction is the architectural generator. The terraces work as seating, viewing platforms and informal stages at once, ready for walking, gathering or performing depending on who shows up.

The fruit vendor cart tucked into the carved passage pushes this further. Informal commerce is not zoned into a dedicated market hall; it simply finds a pocket in the structure and sets up. This is the flexible programmatic framework the designers describe, one that accommodates evolving community needs instead of prescribing them, and it turns the site into a hybrid where everyday life and cultural production share the same ground.

Where the Roof Dips Down to Meet the Street

The black and white rendering pulls back to show the intervention in its urban setting. The ribbed roof dips into a hollow beside the tracks while families walk along the street between the surrounding blocks. That dip is more than a formal gesture. It lowers the structure to the scale of the passerby, making the threshold between neighbourhood and corridor feel continuous rather than guarded.

Read this way, the undulation becomes a tool of access. Where the form rises it shelters and frames; where it falls it invites people in. The Petite Ceinture shifts from a barrier that the city routes around into a green urban corridor that offers residents and visitors an alternative experience of Paris, one that blends history, nature and contemporary design.

A Cardboard Model That Tests Modularity at Urban Scale

The layered cardboard site model is a useful reality check. Seen from above and from the side, the white wavy line threads between dark stacked blocks, and the contrast makes the logic plain: a light, repetitive system slipping through dense, heavy fabric. The layering of the model mirrors the layered construction of the ribs themselves.

That repetition underpins the project's modular construction system, which the designers propose as a way to scale and adapt the intervention across different segments of the Petite Ceinture. Modularity here is not just a building efficiency. It aligns with the conceptual emphasis on process, allowing the structure to grow, change or extend along the ring as the city's needs shift.

Why This Project Matters

Destinesia makes a persuasive case that adaptive reuse can be an act of addition without being an act of erasure. Its most valuable lesson is restraint: by occupying only part of the corridor and leaving the tracks visible, it keeps the Petite Ceinture's identity intact while still making it accessible. The undulating timber terrain proves that a single, repeated structural idea can generate shelter, seating, stage and market without ever declaring which is which.

The open questions are worth taking seriously. A form this expressive invites debate about scale and how intensely any segment of the ring should be built upon, and those are exactly the conversations a project like this should provoke. By treating public space as an evolving process rather than a finished object, Çelik and Şimşek offer a model for urban regeneration that leaves room for the city to keep writing itself.

View the Full Project

About the Designers

Designers: Cansu Çelik, İshak Şimşek

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Project credits: Destinesia by Cansu Çelik, İshak Şimşek Salut Paris (uni.xyz).