Home / The Edit News & Events Plusminus x 4th Wall: a new project space by Diez Office Diez Office, the studio of designer Stefan Diez, hosted an event in their temporary Munich space to debut a program of interdisciplinary projects, starting with Diez’s new Plusminus collection for Vibia.A former store in Munich’s Presying Palais serves as the site of the experimental series entitled 4th Wall, a reference to the imaginary barrier between actors and their audience.