Kleppur was the first medical institution that was constructed and ran completely on public funds.

Mentally ill individuals were commonly mistreated and their quality of living was worse than that of healthy people.

The hospital changed a lot, although it could not take in everyone that needed it, as the Director of Health at that time told Alþingi.

The hospital's methods of operation have changed drastically of the years with the introduction of new and improved therapeutics.

Today, Kleppur's operations mainly consist of rehabilitation and various treatments for people with mental health problems, such as schizophrenia, bipolar disorder, anxiety, depression and addiction.