Designed by B2Ai Architects, Westwing Tower completes Westwing Park — formerly the Accent Business Park — in Roeselare, Belgium. The office complex has grown over the past two decades along the E403 corridor in West Flanders, centrally positioned between Kortrijk and Bruges. Together with the AZ Delta hospital campus, the park forms a gateway to Roeselare.

The tower meets the ongoing demand for office space while signaling a new identity for the park. Stacked volumes and intermediate levels with deeper terraces give the building its distinctive profile. The upwardly expanding forms, wrapped in diagonal aluminum slats, create a balance between stateliness and movement.

The tower prompted a full reassessment of the master plan, generating added value across the site. Conceived by B2Ai, the plan integrates architecture, landscape, mobility, and sustainability as a cohesive system. The tower’s compact footprint frees space for a new central green square, helping shift the park toward a car-free landscape focused on ecology, well-being, and social interaction.

Architectural expression

The thirteen-story structure is composed of three stacked volumes that expand upward, introducing rhythm and balance. A double-skin facade pairs glass with diagonal bronze-anodized aluminum slats, creating a dynamic graphic effect that shifts with the viewer’s angle. Fully glazed facades ensure visual consistency and generous daylight throughout the workspaces.

Materials and energy  efficiency

Geothermal heat pumps, high-performance facades, and extensive glazing form an energy-efficient envelope. More than 70 percent of the facade area is glass, increasing daylight while reducing reliance on artificial lighting.

Climate ceilings regulate temperature and humidity, while intelligent control systems track and optimize energy use for heating, cooling, and lighting—supporting long-term efficiency and lower emissions.

Adaptive design

Flexibility and circular-economy principles guide the design. Load-bearing columns establish the primary grid, leaving open, column-free office floors that can be reconfigured as needs evolve.

This structural logic supports future adaptation—from office use to co-working, hospitality, or mixed-use—without major structural changes. The material palette prioritizes recyclability and durability, minimizing life-cycle impacts from maintenance or replacement.

Ecology and landscape strategy

The master plan positions Westwing Park as an accessible green hub. A biodiversity-rich central square links buildings through water features, native vegetation, and tree canopies that moderate temperature and support rainwater absorption.

A new parking structure with a vegetated facade moves cars to the periphery, creating a pedestrian-focused, climate-resilient environment that encourages informal interaction.

Interior well-being

B2Ai Interior Design curated the interiors, including workspaces for B2Ai, Steenoven, and Cennini Holding. Each level reflects user identity while keeping a consistent focus on well-being.

The design avoids monofunctional layouts, allowing meeting areas, work zones, and circulation spaces to remain interchangeable. Natural materials, sustainable veneer from fast-growing European species, and fully recyclable flooring support a healthy indoor environment and lower embodied carbon.

Westwing Tower achieved an Outstanding score in the BREEAM Design Phase, placing it in the top one percent for sustainability. The rating reflects its comprehensive strategy for reducing carbon, improving energy performance, and applying circular design principles. Renewable energy, heat pumps, climate ceilings, and sensor-controlled ventilation provide stable indoor conditions with lower emissions and maintenance needs.