Artist Nikolaus Koliusis created a light installation for a tunnel. The lighting imparts a sense of identity to this non-place and facilitates (underground) orientation in the city, a problem that also arises in the design of metro networks. Quite apart from architectural considerations, special lighting is increasingly being deployed in tunnels in an effort to dispel feelings of anxiety or claustrophobia among motorists. But in this case the relation between lighting and space goes a step further. The U-shaped blue lighting strip on the roofs of the tunnels (two directions) mirrors the contours of the aboveground Stuttgart Art Museum, a cubic building. As such, the artwork alerts drivers to the fact that they are underneath the building and almost inside it - the museum's basement runs alongside the tunnel. Only after the motorist has driven in both directions is the image of the square plan complete. The installation is both a visiting card for the museum and part of its collection.