An urban and landscape anchor. Situated in Épernay, the capital of Champagne, the police station is located on the outskirts of the town, at the heart of a site dominated by vineyards. It inserts itself within the confines of an old military barracks complex, of which numerous vestiges remain, and cohabits with other amenities of stature such as a secondary school and a convention centre. The implantation of the building takes advantage of a site constrained by its sloped topography, its irregular shape and the presence of polluted soil. From these constraints come a unique pentagonal morphology, which structures the project and responds to its environment.