This 19th-century building in Antwerp has experienced multiple transformations over time, serving successively as a hotel, a bank, and later as public baths. Today, only its neoclassical façade remains, carefully preserved as a witness to its layered history. The current project seeks to revitalize the elongated, irregularly shaped plot, nestled between two party walls, by transforming it into the new headquarters of the local police. Inspired by the typology of Italian palazzi, the design organizes spaces through a sequence of interconnected rooms that ensure clarity and fluidity. The structure forms the core of the project: a system of transverse frames, columns, and beams perpendicular to the party wall defines both the rhythm and the spatial organization. This constructive approach responds to the site’s constraints while ensuring durability, functionality, robustness, and structural coherence. The concrete structural elements were predominantly cast in situ. Balancing open and enclosed spaces, patios have been integrated to bring in natural light and provide resting areas for users. While the primary structure relies on concrete frames, it evolves in the pavilion into glulam and cross-laminated timber, culminating in an overhanging coffered roof supported on one side by columns and on the other by the party wall.