How can crowded spaces be made to seem emptier via temporary structural additions? Here, the dominance of existing columns and staircases is relativized by focusing on space: light is used to insert a new space into the foyer, also creating a signage system. A continuous light strip on the ground floor and four light walls upstairs form an immaterial white envelope with large lettering indicating the foyers various functions. With a toy-like disregard for the proportions of its support, the typography frees itself from the imperatives of the existing architecture and becomes the basis for a new spatiality. A second envelope is created by lightboxes running along the central balustrade, displaying exhibition titles for visitor orientation. With their computerized RGB light-mixing technology, these lightboxes (unlike the white envelope) can generate exhibition-specific logo colors. The lighting and signage system translates technical means (lighting, displays, inscriptions) into architecture, where they appear not as objects but as space-shaping surfaces. On the ground floor, the services (tickets/information/catalogs, cloakroom, seating) are set below the light strip as low-key white elements. Using a sheeting system developed for illuminated billboards, large, seamless, printed surfaces can be manufactured economically.