The walls of the visitor tunnel at the Justiz Vollsugs Anstalt (Prison) in Dusseldorf Germany has been turned into a box of emotions by artist Markus Linnenbrink. The horizontal strips painted in bright colors run through out the walls & flooring of the tunnel. The different colours portray different emotions: Sadness, Happiness, Anxiety…A mix of emotions a visitor goes through while visiting loved ones in prison.