The headquarters of ACPV ARCHITECTS and Antonio Citterio, located on a quiet street in central Milan, occupies an infill site between two existing buildings. Five floors above ground and three below contain open-plan offices, meeting rooms, and technical spaces. Natural light reaches the lower levels through a central courtyard. Circulation is organized around a stair in Aurisina stone and a glass elevator connecting all floors. The façade, in Ceppo stone with anodized aluminium frames, aligns with Milan’s tradition of measured urban continuity.