The brain is the most complex organ in the body. It would stand to reason that there should be a hospital specializing in that organ. This is what a mental health hospital is. There will also be mental health clinics for outpatient services, but a mental health hospital will be more catered to inpatient services. Every floor can have their own specialty such as depression or Obsessive Compulsive Disorders (OCD). If a person is determined as a threat to themselves, or others, the court system can order someone to go to an inpatient hospital to help address their issues. For those defined as criminally insane, they will go to a specialized locked down hospital to where they can serve their term, and hopefully get real rehabilitation.