Levels: Adaptive Urban Public Space Architecture

In the evolving discourse of contemporary cities, adaptive urban public space architecture has emerged as a critical strategy to transform underutilized infrastructure into vibrant civic landscapes. The project Levels, a shortlisted entry of Salut Paris by Konstantinos Kartsaklis, exemplifies this approach through a refined intervention that reinterprets a linear railway site into a multi-layered public environment.

The proposal is grounded in a clear architectural intent: to respect the historical continuity of the site while introducing a flexible spatial framework capable of accommodating diverse activities. Rather than imposing a rigid program, the design operates through a system of minimal yet strategic gestures that enhance usability, accessibility, and experiential richness.

Concept: Continuity Through Transformation

At the core of this adaptive urban public space architecture is the idea of continuity. The design acknowledges the site's past functions and social patterns, ensuring that existing uses are not erased but amplified. This sensitivity is translated into a series of seemingly levitating horizontal surfaces that hover above the terrain, creating a layered spatial condition.

These surfaces act as both connectors and separators, organizing circulation while maintaining visual permeability. The intervention does not dominate the site; instead, it frames and enhances the existing urban void, transforming it into a shared civic ground.

Spatial Strategy: Addressing Linearity

Linear urban sites often suffer from monotony and limited engagement. The project tackles this constraint through a dual-zone strategy that expands the usable width of the site and introduces vertical complexity.

Two primary zones emerge along the railway axis, each activated by a combination of elevated platforms and recessed spaces. This interplay between above and below generates a dynamic sequence of spatial experiences, encouraging movement, pause, and interaction.

The sectional articulation is particularly significant. By carving into the ground and layering surfaces above, the design creates a three-dimensional public realm where activities can coexist without conflict. This approach transforms a one-dimensional corridor into a rich, multi-scalar environment.

Programmatic Flexibility and Inclusivity

A defining characteristic of this adaptive urban public space architecture is its programmatic openness. The simplicity of the surfaces allows the space to host a wide spectrum of activities, making it accessible to diverse user groups, including residents, tourists, and transient populations.

Key programmatic elements include:

• A bar and cafeteria fostering social interaction
• A cinema space and performance stage for cultural events
• A glasshouse integrated with educational and ecological functions
• Cultivation areas that connect with nearby schools
• Weekly market zones supported by shaded platforms

This flexible programming ensures that the space remains active throughout the day and across seasons, reinforcing its role as a social condenser.

Material Logic and Cost Efficiency

The project adopts a pragmatic material strategy aligned with its context. By utilizing materials already present on site such as metal, gravel, and concrete, the design achieves both economic efficiency and environmental responsibility.

Metal columns support the elevated surfaces, enabling structural lightness and visual continuity. Concrete and gravel define the ground planes, offering durability and low maintenance. This restrained palette not only reduces costs but also ensures coherence with the site's existing character.

Ecology and Urban Integration

Beyond its spatial and programmatic qualities, the project introduces a subtle ecological layer. Green walls, planted surfaces, and cultivation zones contribute to microclimatic regulation and biodiversity. These elements soften the urban condition while enhancing the sensory experience of the space.

The integration of vegetation along vertical and horizontal planes reinforces the project's identity as a living landscape rather than a static intervention. It positions the site as both a social and ecological infrastructure within the city.

Experience: A Layered Urban Journey

The experiential dimension of Levels is defined by its sequencing of spaces. Visitors move through a series of transitions, from open corridors to shaded platforms, from ground-level pathways to elevated viewpoints. Light, material, and vegetation interact to create a constantly shifting atmosphere.

The levitating surfaces, in particular, generate a sense of lightness and openness, allowing users to perceive the site in multiple ways simultaneously. This layered perception is central to the project's success as an adaptive urban public space.

Levels demonstrates how adaptive urban public space architecture can transform neglected infrastructure into meaningful civic environments. By balancing simplicity with complexity, and continuity with innovation, the project offers a scalable model for reactivating linear urban sites.

It is not merely a design intervention but a platform for coexistence, where different activities, communities, and temporalities intersect. In doing so, it reflects a contemporary understanding of public space as dynamic, inclusive, and resilient.