Prisons in Switzerland have been given an unusual paint job - their cells are being painted pink.
Thirty cells have been painted pink in an attempt to calm down aggressive inmates.
The project, called Cool Down Pink, is having positive results in prisons, according to experts.
Psychologist Daniela Spath said: "Anger levels can reduce in as little as 15 minutes, though we usually confine a convict to a pink cell for two hours."