Philarmonie Szczecin, Mies van der Rohe award of 2015, started as a simple shoe-box hall, but it was transformed in an architectural jewel. Every surface is covered with a complex geometry which were designed in a deep analysis of the kind of diffusion needed in every zone of the hall. The result is a room with an acoustics that gives a full diffusion of sound without adds absorption effects nor coloration, and offering an excellent clarity and intimacy.